------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 0 PID: 12 at fs/buffer.c:1229 __brelse fs/buffer.c:1229 [inline]
WARNING: CPU: 0 PID: 12 at fs/buffer.c:1229 brelse include/linux/buffer_head.h:324 [inline]
WARNING: CPU: 0 PID: 12 at fs/buffer.c:1229 __invalidate_bh_lrus fs/buffer.c:1498 [inline]
WARNING: CPU: 0 PID: 12 at fs/buffer.c:1229 invalidate_bh_lru+0x102/0x1b0 fs/buffer.c:1511
Modules linked in:
CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: netns cleanup_net
RIP: 0010:__brelse fs/buffer.c:1229 [inline]
RIP: 0010:brelse include/linux/buffer_head.h:324 [inline]
RIP: 0010:__invalidate_bh_lrus fs/buffer.c:1498 [inline]
RIP: 0010:invalidate_bh_lru+0x102/0x1b0 fs/buffer.c:1511
Code: 44 f4 da ff f0 ff 0b eb 25 e8 9a 35 73 ff 41 80 3c 2e 00 75 2a eb 30 e8 8c 35 73 ff 90 48 c7 c7 a0 ce 18 8c e8 3f dc 33 ff 90 <0f> 0b 90 90 48 bd 00 00 00 00 00 fc ff df 41 80 3c 2e 00 74 08 4c
RSP: 0018:ffffc90000007f30 EFLAGS: 00010046
RAX: ce898478c265c800 RBX: ffff888078c79060 RCX: ffff88801bee5a00
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81601b22 R09: 1ffff110170c519a
R10: dffffc0000000000 R11: ffffed10170c519b R12: ffff8880b8639838
R13: 0000000000000000 R14: 1ffff110170c7307 R15: ffff8880b8639838
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffed8b1ec08 CR3: 00000000343cc000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
csd_do_func kernel/smp.c:134 [inline]
__flush_smp_call_function_queue+0x3fc/0x1620 kernel/smp.c:540
__sysvec_call_function_single+0xb8/0x430 arch/x86/kernel/smp.c:271
instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0x9e/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709
RIP: 0010:memset_orig+0x3a/0xb0 arch/x86/lib/memset_64.S:69
Code: 01 01 01 01 01 48 0f af c1 41 89 f9 41 83 e1 07 75 70 48 89 d1 48 c1 e9 06 74 35 0f 1f 44 00 00 48 ff c9 48 89 07 48 89 47 08 <48> 89 47 10 48 89 47 18 48 89 47 20 48 89 47 28 48 89 47 30 48 89
RSP: 0018:ffffc90000117278 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffffc90000117280 RCX: 0000000000000003
RDX: 0000000000000200 RSI: 0000000000000000 RDI: ffffc90000117380
RBP: ffffc900001174a8 R08: ffffffff814d423c R09: 0000000000000000
R10: ffffc90000117280 R11: fffffbfff203036f R12: ffffffff824537d0
R13: 1ffff92000022ea8 R14: 0000000000000000 R15: 0000000000000000
kasan_save_stack+0x30/0x60 mm/kasan/common.c:44
__kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:544
__call_rcu_common kernel/rcu/tree.c:3086 [inline]
call_rcu+0x167/0xa70 kernel/rcu/tree.c:3190
kernfs_put+0x1dc/0x370 fs/kernfs/dir.c:578
kernfs_remove_by_name_ns+0xe4/0x160 fs/kernfs/dir.c:1695
kernfs_remove_by_name include/linux/kernfs.h:625 [inline]
remove_files fs/sysfs/group.c:28 [inline]
sysfs_remove_group+0xfe/0x2c0 fs/sysfs/group.c:322
sysfs_remove_groups+0x54/0xb0 fs/sysfs/group.c:346
device_remove_groups drivers/base/core.c:2819 [inline]
device_remove_attrs+0x1dc/0x290 drivers/base/core.c:2949
device_del+0x572/0x9b0 drivers/base/core.c:3853
unregister_netdevice_many_notify+0x1859/0x1da0 net/core/dev.c:11556
cleanup_net+0x75d/0xcc0 net/core/net_namespace.c:627
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
----------------
Code disassembly (best guess):
0: 01 01 add %eax,(%rcx)
2: 01 01 add %eax,(%rcx)
4: 01 48 0f add %ecx,0xf(%rax)
7: af scas %es:(%rdi),%eax
8: c1 41 89 f9 roll $0xf9,-0x77(%rcx)
c: 41 83 e1 07 and $0x7,%r9d
10: 75 70 jne 0x82
12: 48 89 d1 mov %rdx,%rcx
15: 48 c1 e9 06 shr $0x6,%rcx
19: 74 35 je 0x50
1b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
20: 48 ff c9 dec %rcx
23: 48 89 07 mov %rax,(%rdi)
26: 48 89 47 08 mov %rax,0x8(%rdi)
* 2a: 48 89 47 10 mov %rax,0x10(%rdi) <-- trapping instruction
2e: 48 89 47 18 mov %rax,0x18(%rdi)
32: 48 89 47 20 mov %rax,0x20(%rdi)
36: 48 89 47 28 mov %rax,0x28(%rdi)
3a: 48 89 47 30 mov %rax,0x30(%rdi)
3e: 48 rex.W
3f: 89 .byte 0x89