[v5.15] INFO: rcu detected stall in sock_write_iter (2)
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syzbot
Apr 19, 2024, 4:46:19 AMApr 19
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Hello,
syzbot found the following issue on:
HEAD commit: c52b9710c83d Linux 5.15.156
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=145cb957180000
kernel config: https://syzkaller.appspot.com/x/.config?x=567b6ddc38438433
dashboard link: https://syzkaller.appspot.com/bug?extid=740dd6800e1897f604f1
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1bd4b9969373/disk-c52b9710.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/10509e89bd25/vmlinux-c52b9710.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a623a4c52eb5/bzImage-c52b9710.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+740dd6...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...0: (1 GPs behind) idle=6d5/1/0x4000000000000000 softirq=5972/5976 fqs=5248
(detected by 0, t=10502 jiffies, g=6061, q=1132)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3511 Comm: syz-fuzzer Not tainted 5.15.156-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:107 [inline]
RIP: 0010:lock_is_held_type+0x69/0x180 kernel/locking/lockdep.c:5662
Code: 8b 2d 7b cf e4 75 41 83 bd ec 0a 00 00 00 0f 85 db 00 00 00 41 89 f6 49 89 ff 48 c7 04 24 00 00 00 00 9c 8f 04 24 4c 8b 24 24 <fa> 48 c7 c7 80 37 8b 8a e8 0a 12 00 00 65 ff 05 83 d8 e4 75 41 83
RSP: 0018:ffffc90000dd0c78 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88807d399dc0
RDX: ffff88807d399dc0 RSI: 00000000ffffffff RDI: ffff88805d7dbb00
RBP: 00000000ffffffff R08: ffffffff886c19d7 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000046
R13: ffff88807d399dc0 R14: 00000000ffffffff R15: ffff88805d7dbb00
FS: 000000c0006b0090(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f814f4d2bd8 CR3: 0000000074926000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
lock_is_held include/linux/lockdep.h:287 [inline]
advance_sched+0x69/0x940 net/sched/sch_taprio.c:717
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:unwind_next_frame+0x141/0x1fa0 arch/x86/kernel/unwind_orc.c:448
Code: ba 00 00 00 00 00 fc ff df f6 03 03 0f 85 83 15 00 00 49 8d 6f 35 49 89 ec 49 c1 ec 03 41 0f b6 04 14 84 c0 0f 85 f1 16 00 00 <4c> 0f be 6d 00 48 8b 44 24 28 80 3c 10 00 48 8b 5c 24 08 74 12 48
RSP: 0018:ffffc90002ce6788 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff913edf03
RDX: dffffc0000000000 RSI: ffffffff81c9fbf8 RDI: 0000000000000001
RBP: ffffc90002ce6875 R08: 0000000000000002 R09: ffffc90002ce6930
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200059cd0e
R13: ffffffff816df630 R14: ffffffff81c9fbf8 R15: ffffc90002ce6840
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x80 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1705 [inline]
slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
slab_free mm/slub.c:3499 [inline]
kmem_cache_free+0x91/0x1f0 mm/slub.c:3515
packet_rcv+0x151/0x1210 net/packet/af_packet.c:2196
dev_queue_xmit_nit+0x9bb/0xae0 net/core/dev.c:2342
xmit_one net/core/dev.c:3612 [inline]
dev_hard_start_xmit+0x137/0x7a0 net/core/dev.c:3633
sch_direct_xmit+0x2b2/0x5e0 net/sched/sch_generic.c:342
__dev_xmit_skb net/core/dev.c:3844 [inline]
__dev_queue_xmit+0x18ee/0x3230 net/core/dev.c:4213
neigh_hh_output include/net/neighbour.h:493 [inline]
neigh_output include/net/neighbour.h:507 [inline]
ip_finish_output2+0xcd7/0x11a0 net/ipv4/ip_output.c:228
dst_output include/net/dst.h:443 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
__ip_queue_xmit+0x1296/0x1ce0 net/ipv4/ip_output.c:532
__tcp_transmit_skb+0x1f39/0x3810 net/ipv4/tcp_output.c:1402
tcp_transmit_skb net/ipv4/tcp_output.c:1420 [inline]
tcp_write_xmit+0x19e5/0x65f0 net/ipv4/tcp_output.c:2705
__tcp_push_pending_frames+0x90/0x250 net/ipv4/tcp_output.c:2890
tcp_sendmsg_locked+0x315c/0x3a90 net/ipv4/tcp.c:1428
tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1456
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
sock_write_iter+0x39b/0x530 net/socket.c:1079
call_write_iter include/linux/fs.h:2172 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xacf/0xe50 fs/read_write.c:594
ksys_write+0x1a2/0x2c0 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x40720e
Code: 48 83 ec 38 e8 13 00 00 00 48 83 c4 38 5d c3 cc cc cc cc cc cc cc cc cc cc cc cc cc 49 89 f2 48 89 fa 48 89 ce 48 89 df 0f 05 <48> 3d 01 f0 ff ff 76 15 48 f7 d8 48 89 c1 48 c7 c0 ff ff ff ff 48
RSP: 002b:000000c000402dd0 EFLAGS: 00000216 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000040720e
RDX: 00000000000000f0 RSI: 000000c0004ea200 RDI: 0000000000000003
RBP: 000000c000402e10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000216 R12: 000000c000402f50
R13: 0000000000000001 R14: 000000c0000061a0 R15: 000000000000000f
</TASK>
---
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 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: c52b9710c83d Linux 5.15.156
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=145cb957180000
kernel config: https://syzkaller.appspot.com/x/.config?x=567b6ddc38438433
dashboard link: https://syzkaller.appspot.com/bug?extid=740dd6800e1897f604f1
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1bd4b9969373/disk-c52b9710.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/10509e89bd25/vmlinux-c52b9710.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a623a4c52eb5/bzImage-c52b9710.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+740dd6...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...0: (1 GPs behind) idle=6d5/1/0x4000000000000000 softirq=5972/5976 fqs=5248
(detected by 0, t=10502 jiffies, g=6061, q=1132)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3511 Comm: syz-fuzzer Not tainted 5.15.156-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:107 [inline]
RIP: 0010:lock_is_held_type+0x69/0x180 kernel/locking/lockdep.c:5662
Code: 8b 2d 7b cf e4 75 41 83 bd ec 0a 00 00 00 0f 85 db 00 00 00 41 89 f6 49 89 ff 48 c7 04 24 00 00 00 00 9c 8f 04 24 4c 8b 24 24 <fa> 48 c7 c7 80 37 8b 8a e8 0a 12 00 00 65 ff 05 83 d8 e4 75 41 83
RSP: 0018:ffffc90000dd0c78 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88807d399dc0
RDX: ffff88807d399dc0 RSI: 00000000ffffffff RDI: ffff88805d7dbb00
RBP: 00000000ffffffff R08: ffffffff886c19d7 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000046
R13: ffff88807d399dc0 R14: 00000000ffffffff R15: ffff88805d7dbb00
FS: 000000c0006b0090(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f814f4d2bd8 CR3: 0000000074926000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
lock_is_held include/linux/lockdep.h:287 [inline]
advance_sched+0x69/0x940 net/sched/sch_taprio.c:717
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:unwind_next_frame+0x141/0x1fa0 arch/x86/kernel/unwind_orc.c:448
Code: ba 00 00 00 00 00 fc ff df f6 03 03 0f 85 83 15 00 00 49 8d 6f 35 49 89 ec 49 c1 ec 03 41 0f b6 04 14 84 c0 0f 85 f1 16 00 00 <4c> 0f be 6d 00 48 8b 44 24 28 80 3c 10 00 48 8b 5c 24 08 74 12 48
RSP: 0018:ffffc90002ce6788 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff913edf03
RDX: dffffc0000000000 RSI: ffffffff81c9fbf8 RDI: 0000000000000001
RBP: ffffc90002ce6875 R08: 0000000000000002 R09: ffffc90002ce6930
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200059cd0e
R13: ffffffff816df630 R14: ffffffff81c9fbf8 R15: ffffc90002ce6840
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x80 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1705 [inline]
slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
slab_free mm/slub.c:3499 [inline]
kmem_cache_free+0x91/0x1f0 mm/slub.c:3515
packet_rcv+0x151/0x1210 net/packet/af_packet.c:2196
dev_queue_xmit_nit+0x9bb/0xae0 net/core/dev.c:2342
xmit_one net/core/dev.c:3612 [inline]
dev_hard_start_xmit+0x137/0x7a0 net/core/dev.c:3633
sch_direct_xmit+0x2b2/0x5e0 net/sched/sch_generic.c:342
__dev_xmit_skb net/core/dev.c:3844 [inline]
__dev_queue_xmit+0x18ee/0x3230 net/core/dev.c:4213
neigh_hh_output include/net/neighbour.h:493 [inline]
neigh_output include/net/neighbour.h:507 [inline]
ip_finish_output2+0xcd7/0x11a0 net/ipv4/ip_output.c:228
dst_output include/net/dst.h:443 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
__ip_queue_xmit+0x1296/0x1ce0 net/ipv4/ip_output.c:532
__tcp_transmit_skb+0x1f39/0x3810 net/ipv4/tcp_output.c:1402
tcp_transmit_skb net/ipv4/tcp_output.c:1420 [inline]
tcp_write_xmit+0x19e5/0x65f0 net/ipv4/tcp_output.c:2705
__tcp_push_pending_frames+0x90/0x250 net/ipv4/tcp_output.c:2890
tcp_sendmsg_locked+0x315c/0x3a90 net/ipv4/tcp.c:1428
tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1456
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
sock_write_iter+0x39b/0x530 net/socket.c:1079
call_write_iter include/linux/fs.h:2172 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xacf/0xe50 fs/read_write.c:594
ksys_write+0x1a2/0x2c0 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x40720e
Code: 48 83 ec 38 e8 13 00 00 00 48 83 c4 38 5d c3 cc cc cc cc cc cc cc cc cc cc cc cc cc 49 89 f2 48 89 fa 48 89 ce 48 89 df 0f 05 <48> 3d 01 f0 ff ff 76 15 48 f7 d8 48 89 c1 48 c7 c0 ff ff ff ff 48
RSP: 002b:000000c000402dd0 EFLAGS: 00000216 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000040720e
RDX: 00000000000000f0 RSI: 000000c0004ea200 RDI: 0000000000000003
RBP: 000000c000402e10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000216 R12: 000000c000402f50
R13: 0000000000000001 R14: 000000c0000061a0 R15: 000000000000000f
</TASK>
---
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 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
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