[v6.1] WARNING in ip_rt_bug (4)
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syzbot
Sep 7, 2025, 10:20:28 PM (5 days ago) Sep 7
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 28c695c365e1 Linux 6.1.150
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=158a1562580000
kernel config: https://syzkaller.appspot.com/x/.config?x=68aa5a3af1cb953a
dashboard link: https://syzkaller.appspot.com/bug?extid=076f99a5286d95054742
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10037962580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16677312580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/16e807247bf6/disk-28c695c3.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/a2c735eaf8f9/vmlinux-28c695c3.xz
kernel image: https://storage.googleapis.com/syzbot-assets/080f0096d6c9/Image-28c695c3.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+076f99...@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 4904 Comm: syz.0.408 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000ed990500
x26: dfff800000000000 x25: 1fffe0001db320ab x24: dfff800000000000
x23: ffff0000ce86e600 x22: ffff0000ce86e630 x21: ffff0000c4fb8d00
x20: ffff0000ed990500 x19: ffff0000ed990500 x18: 0000000000000000
x17: ffff8000181f9000 x16: ffff8000082d22d4 x15: ffff80000fd818b0
x14: ffff80001051e60c x13: ffff80000fd80f00 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : a8cfd419ac140c00
x8 : a8cfd419ac140c00 x7 : ffff8000083af900 x6 : ffff80000fd80f00
x5 : ffff0000d940b628 x4 : ffff800008007270 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
vsnprintf+0x10b0/0x1890 lib/vsprintf.c:2805
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
c_show+0x40/0x3f8 crypto/proc.c:40
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 1921
hardirqs last enabled at (1920): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (1921): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1643): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 4904 Comm: syz.0.408 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000ed990640
x26: dfff800000000000 x25: 1fffe0001db320d3 x24: dfff800000000000
x23: ffff0000ce86e600 x22: ffff0000ce86e630 x21: ffff0000c4fb8d00
x20: ffff0000ed990640 x19: ffff0000ed990640 x18: 0000000036b6d8fa
x17: dfff800000000000 x16: ffff8000082d22d4 x15: 0000000000000000
x14: 00000000081a8e9c x13: 0000000031cf6a47 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : a8cfd419ac140c00
x8 : a8cfd419ac140c00 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
vsnprintf+0x10b0/0x1890 lib/vsprintf.c:2805
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
c_show+0x40/0x3f8 crypto/proc.c:40
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 2231
hardirqs last enabled at (2230): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (2231): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1643): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 4904 Comm: syz.0.408 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000ed990780
x26: dfff800000000000 x25: 1fffe0001db320fb x24: dfff800000000000
x23: ffff0000ce86e600 x22: ffff0000ce86e630 x21: ffff0000c4fb8d00
x20: ffff0000ed990780 x19: ffff0000ed990780 x18: 0000000036b6d8fa
x17: dfff800000000000 x16: ffff8000082d22d4 x15: 0000000000000000
x14: 00000000081a8e9c x13: 0000000031cf6a47 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : a8cfd419ac140c00
x8 : a8cfd419ac140c00 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
vsnprintf+0x10b0/0x1890 lib/vsprintf.c:2805
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
c_show+0x40/0x3f8 crypto/proc.c:40
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 2533
hardirqs last enabled at (2532): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (2533): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1643): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 5055 Comm: syz.0.559 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000daadfa00
x26: dfff800000000000 x25: 1fffe0001b55bf4b x24: dfff800000000000
x23: ffff0000d064d200 x22: ffff0000d064d230 x21: ffff0000c4fb8d00
x20: ffff0000daadfa00 x19: ffff0000daadfa00 x18: 0000000000000000
x17: ffff8000181f9000 x16: ffff8000082d22d4 x15: 0000000000000000
x14: 00000000081a8e9c x13: 0000000031cf6a47 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : f690bb1d63e78b00
x8 : f690bb1d63e78b00 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
__sanitizer_cov_trace_switch+0x10/0xf4 kernel/kcov.c:332
vsnprintf+0xd0/0x1890 lib/vsprintf.c:2757
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
crypto_shash_show+0x5c/0xc8 crypto/shash.c:490
c_show+0x1d8/0x3f8 crypto/proc.c:59
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 1819
hardirqs last enabled at (1818): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (1819): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1569): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 5055 Comm: syz.0.559 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000daadf8c0
x26: dfff800000000000 x25: 1fffe0001b55bf23 x24: dfff800000000000
x23: ffff0000d064d200 x22: ffff0000d064d230 x21: ffff0000c4fb8d00
x20: ffff0000daadf8c0 x19: ffff0000daadf8c0 x18: 0000000000000000
x17: ffff8000181f9000 x16: ffff8000082d22d4 x15: 0000000000000000
x14: 00000000081a8e9c x13: 0000000031cf6a47 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : f690bb1d63e78b00
x8 : f690bb1d63e78b00 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
__sanitizer_cov_trace_switch+0x10/0xf4 kernel/kcov.c:332
vsnprintf+0xd0/0x1890 lib/vsprintf.c:2757
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
crypto_shash_show+0x5c/0xc8 crypto/shash.c:490
c_show+0x1d8/0x3f8 crypto/proc.c:59
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 2115
hardirqs last enabled at (2114): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (2115): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1569): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 5055 Comm: syz.0.559 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000daadf780
x26: dfff800000000000 x25: 1fffe0001b55befb x24: dfff800000000000
x23: ffff0000d064d200 x22: ffff0000d064d230 x21: ffff0000c4fb8d00
x20: ffff0000daadf780 x19: ffff0000daadf780 x18: 0000000000000000
x17: ffff8000181f9000 x16: ffff8000082d22d4 x15: 0000000000000000
x14: 00000000081a8e9c x13: 0000000031cf6a47 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : f690bb1d63e78b00
x8 : f690bb1d63e78b00 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
__sanitizer_cov_trace_switch+0x10/0xf4 kernel/kcov.c:332
vsnprintf+0xd0/0x1890 lib/vsprintf.c:2757
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
crypto_shash_show+0x5c/0xc8 crypto/shash.c:490
c_show+0x1d8/0x3f8 crypto/proc.c:59
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 2421
hardirqs last enabled at (2420): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (2421): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1569): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 28c695c365e1 Linux 6.1.150
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=158a1562580000
kernel config: https://syzkaller.appspot.com/x/.config?x=68aa5a3af1cb953a
dashboard link: https://syzkaller.appspot.com/bug?extid=076f99a5286d95054742
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10037962580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16677312580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/16e807247bf6/disk-28c695c3.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/a2c735eaf8f9/vmlinux-28c695c3.xz
kernel image: https://storage.googleapis.com/syzbot-assets/080f0096d6c9/Image-28c695c3.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+076f99...@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 4904 Comm: syz.0.408 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000ed990500
x26: dfff800000000000 x25: 1fffe0001db320ab x24: dfff800000000000
x23: ffff0000ce86e600 x22: ffff0000ce86e630 x21: ffff0000c4fb8d00
x20: ffff0000ed990500 x19: ffff0000ed990500 x18: 0000000000000000
x17: ffff8000181f9000 x16: ffff8000082d22d4 x15: ffff80000fd818b0
x14: ffff80001051e60c x13: ffff80000fd80f00 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : a8cfd419ac140c00
x8 : a8cfd419ac140c00 x7 : ffff8000083af900 x6 : ffff80000fd80f00
x5 : ffff0000d940b628 x4 : ffff800008007270 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
vsnprintf+0x10b0/0x1890 lib/vsprintf.c:2805
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
c_show+0x40/0x3f8 crypto/proc.c:40
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 1921
hardirqs last enabled at (1920): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (1921): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1643): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 4904 Comm: syz.0.408 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000ed990640
x26: dfff800000000000 x25: 1fffe0001db320d3 x24: dfff800000000000
x23: ffff0000ce86e600 x22: ffff0000ce86e630 x21: ffff0000c4fb8d00
x20: ffff0000ed990640 x19: ffff0000ed990640 x18: 0000000036b6d8fa
x17: dfff800000000000 x16: ffff8000082d22d4 x15: 0000000000000000
x14: 00000000081a8e9c x13: 0000000031cf6a47 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : a8cfd419ac140c00
x8 : a8cfd419ac140c00 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
vsnprintf+0x10b0/0x1890 lib/vsprintf.c:2805
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
c_show+0x40/0x3f8 crypto/proc.c:40
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 2231
hardirqs last enabled at (2230): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (2231): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1643): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 4904 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 4904 Comm: syz.0.408 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000ed990780
x26: dfff800000000000 x25: 1fffe0001db320fb x24: dfff800000000000
x23: ffff0000ce86e600 x22: ffff0000ce86e630 x21: ffff0000c4fb8d00
x20: ffff0000ed990780 x19: ffff0000ed990780 x18: 0000000036b6d8fa
x17: dfff800000000000 x16: ffff8000082d22d4 x15: 0000000000000000
x14: 00000000081a8e9c x13: 0000000031cf6a47 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : a8cfd419ac140c00
x8 : a8cfd419ac140c00 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
vsnprintf+0x10b0/0x1890 lib/vsprintf.c:2805
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
c_show+0x40/0x3f8 crypto/proc.c:40
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 2533
hardirqs last enabled at (2532): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (2533): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1638): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1643): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 5055 Comm: syz.0.559 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000daadfa00
x26: dfff800000000000 x25: 1fffe0001b55bf4b x24: dfff800000000000
x23: ffff0000d064d200 x22: ffff0000d064d230 x21: ffff0000c4fb8d00
x20: ffff0000daadfa00 x19: ffff0000daadfa00 x18: 0000000000000000
x17: ffff8000181f9000 x16: ffff8000082d22d4 x15: 0000000000000000
x14: 00000000081a8e9c x13: 0000000031cf6a47 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : f690bb1d63e78b00
x8 : f690bb1d63e78b00 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
__sanitizer_cov_trace_switch+0x10/0xf4 kernel/kcov.c:332
vsnprintf+0xd0/0x1890 lib/vsprintf.c:2757
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
crypto_shash_show+0x5c/0xc8 crypto/shash.c:490
c_show+0x1d8/0x3f8 crypto/proc.c:59
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 1819
hardirqs last enabled at (1818): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (1819): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1569): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 5055 Comm: syz.0.559 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000daadf8c0
x26: dfff800000000000 x25: 1fffe0001b55bf23 x24: dfff800000000000
x23: ffff0000d064d200 x22: ffff0000d064d230 x21: ffff0000c4fb8d00
x20: ffff0000daadf8c0 x19: ffff0000daadf8c0 x18: 0000000000000000
x17: ffff8000181f9000 x16: ffff8000082d22d4 x15: 0000000000000000
x14: 00000000081a8e9c x13: 0000000031cf6a47 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : f690bb1d63e78b00
x8 : f690bb1d63e78b00 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
__sanitizer_cov_trace_switch+0x10/0xf4 kernel/kcov.c:332
vsnprintf+0xd0/0x1890 lib/vsprintf.c:2757
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
crypto_shash_show+0x5c/0xc8 crypto/shash.c:490
c_show+0x1d8/0x3f8 crypto/proc.c:59
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 2115
hardirqs last enabled at (2114): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (2115): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1569): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 5055 at net/ipv4/route.c:1278 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
Modules linked in:
CPU: 0 PID: 5055 Comm: syz.0.559 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1220
lr : kfree_skb include/linux/skbuff.h:1220 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
sp : ffff8000080075c0
x29: ffff8000080075c0 x28: 1ffff00001000ef8 x27: ffff0000daadf780
x26: dfff800000000000 x25: 1fffe0001b55befb x24: dfff800000000000
x23: ffff0000d064d200 x22: ffff0000d064d230 x21: ffff0000c4fb8d00
x20: ffff0000daadf780 x19: ffff0000daadf780 x18: 0000000000000000
x17: ffff8000181f9000 x16: ffff8000082d22d4 x15: 0000000000000000
x14: 00000000081a8e9c x13: 0000000031cf6a47 x12: 0000000000ff0100
x11: ff0080000a8935f4 x10: 0000000000000003 x9 : f690bb1d63e78b00
x8 : f690bb1d63e78b00 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011abd7c0 x0 : 0000000000000000
Call trace:
kfree_skb include/linux/skbuff.h:1220 [inline]
ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1277
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1600
ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1620
icmp_push_reply+0x2e0/0x3c0 net/ipv4/icmp.c:399
__icmp_send+0xbd4/0xfc4 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1258 [inline]
ipv4_link_failure+0x54c/0x8b0 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x11c/0x16c net/ipv4/arp.c:296
neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1064
neigh_timer_handler+0x704/0xe18 net/core/neighbour.c:1151
call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x460/0x6bc kernel/time/timer.c:1820
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
handle_softirqs+0x318/0xc6c kernel/softirq.c:596
__do_softirq+0x14/0x20 kernel/softirq.c:630
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
invoke_softirq kernel/softirq.c:477 [inline]
__irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
__sanitizer_cov_trace_switch+0x10/0xf4 kernel/kcov.c:332
vsnprintf+0xd0/0x1890 lib/vsprintf.c:2757
seq_vprintf fs/seq_file.c:391 [inline]
seq_printf+0x148/0x22c fs/seq_file.c:406
crypto_shash_show+0x5c/0xc8 crypto/shash.c:490
c_show+0x1d8/0x3f8 crypto/proc.c:59
seq_read_iter+0x858/0xc00 fs/seq_file.c:272
proc_reg_read_iter+0x184/0x2b0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2259 [inline]
generic_file_splice_read+0x160/0x404 fs/splice.c:308
do_splice_to fs/splice.c:803 [inline]
splice_direct_to_actor+0x300/0x978 fs/splice.c:875
do_splice_direct+0x158/0x244 fs/splice.c:1002
do_sendfile+0x458/0xc88 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__arm64_sys_sendfile64+0x130/0x360 fs/read_write.c:1309
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 2421
hardirqs last enabled at (2420): [<ffff8000088d764c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (2421): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1564): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (1569): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---
---
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