Hello,
syzbot found the following issue on:
HEAD commit: 347385861c50 Linux 6.1.84
git tree: linux-6.1.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=16eaa3d3180000
kernel config:
https://syzkaller.appspot.com/x/.config?x=40dfd13b04bfc094
dashboard link:
https://syzkaller.appspot.com/bug?extid=1af199ace22cd0e712aa
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/584c64d6360b/disk-34738586.raw.xz
vmlinux:
https://storage.googleapis.com/syzbot-assets/ebe1b8334610/vmlinux-34738586.xz
kernel image:
https://storage.googleapis.com/syzbot-assets/e3d485b54a02/bzImage-34738586.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+1af199...@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4233 at kernel/softirq.c:376 __local_bh_enable_ip+0x1b3/0x1f0
Modules linked in:
CPU: 0 PID: 4233 Comm: syz-executor.0 Not tainted 6.1.84-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__local_bh_enable_ip+0x1b3/0x1f0 kernel/softirq.c:376
Code: 04 25 28 00 00 00 48 3b 44 24 60 75 4a 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b e9 d0 fe ff ff e8 3f 00 00 00 eb a2 <0f> 0b e9 02 ff ff ff 48 c7 c1 e4 9e 73 8e 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900031ef340 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 1ffff9200063de6c RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff88984c11
RBP: ffffc900031ef3e8 R08: dffffc0000000000 R09: ffffed100f253e50
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffc900031ef380 R15: 0000000000000201
FS: 00007fd7eb51f6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001700 CR3: 000000007820e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
spin_unlock_bh include/linux/spinlock.h:396 [inline]
sock_map_del_link net/core/sock_map.c:163 [inline]
sock_map_unref+0x401/0x5d0 net/core/sock_map.c:182
sock_hash_delete_elem+0x273/0x2f0 net/core/sock_map.c:936
bpf_prog_3ffd2c70e20892c6+0x3a/0x43
bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
__bpf_prog_run include/linux/filter.h:603 [inline]
bpf_prog_run include/linux/filter.h:610 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
bpf_trace_run2+0x1fd/0x410 kernel/trace/bpf_trace.c:2312
__bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:94
trace_kfree include/trace/events/kmem.h:94 [inline]
kfree+0xf6/0x190 mm/slab_common.c:994
__netlink_kernel_create+0x424/0x780 net/netlink/af_netlink.c:2038
netlink_kernel_create include/linux/netlink.h:62 [inline]
diag_net_init+0xa3/0x120 net/core/sock_diag.c:319
ops_init+0x356/0x600 net/core/net_namespace.c:135
setup_net+0x4b5/0xb90 net/core/net_namespace.c:332
copy_net_ns+0x395/0x5d0 net/core/net_namespace.c:478
create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110
copy_namespaces+0x397/0x3f0 kernel/nsproxy.c:178
copy_process+0x1ab8/0x4060 kernel/fork.c:2270
kernel_clone+0x222/0x920 kernel/fork.c:2682
__do_sys_clone kernel/fork.c:2823 [inline]
__se_sys_clone kernel/fork.c:2807 [inline]
__x64_sys_clone+0x231/0x280 kernel/fork.c:2807
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd7ea87de69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd7eb51f078 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fd7ea9abf80 RCX: 00007fd7ea87de69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000738c0480
RBP: 00007fd7ea8ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd7ea9abf80 R15: 00007ffc89682b68
</TASK>
---
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