EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000.
EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000.
Oops: general protection fault, probably for non-canonical address 0xdffffc000308a780: 0000 [#1] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000018453c00-0x0000000018453c07]
CPU: 1 UID: 0 PID: 291 Comm: syz-executor.4 Tainted: G W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:destroy_workqueue+0x5a2/0xa00
Code: 3f 0f 87 24 01 00 00 e8 0c 58 31 00 89 de 48 89 ef e8 52 6b fe ff 49 89 c7 48 85 c0 74 41 e8 f5 57 31 00 4c 89 fa 48 c1 ea 03 <42> 80 3c 22 00 0f 85 89 03 00 00 49 8b 3f e8 bb 50 7b 03 4c 89 ff
RSP: 0018:ffff888016b3fcb8 EFLAGS: 00010212
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8140fc07
RDX: 000000000308a780 RSI: ffffffff81428f8b RDI: 0000000000000005
RBP: ffff888047aa9800 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: ffffffff85852560 R14: ffffed1008f55339 R15: 0000000018453c00
FS: 0000555577fbe400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff43429c48 CR3: 000000004503b000 CR4: 0000000000350ef0
Call Trace:
ext4_put_super+0x106/0xf30
generic_shutdown_super+0x15a/0x4a0
kill_block_super+0x3b/0x90
ext4_kill_sb+0x6c/0xb0
deactivate_locked_super+0xbf/0x1a0
deactivate_super+0xb1/0xd0
cleanup_mnt+0x2df/0x430
task_work_run+0x172/0x280
exit_to_user_mode_loop+0xef/0x110
do_syscall_64+0x2f7/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26fc049f87
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdec7a0828 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00000000000000e9 RCX: 00007f26fc049f87
RDX: 00007ffdec7a08fb RSI: 000000000000000a RDI: 00007ffdec7a08f0
RBP: 00007ffdec7a08f0 R08: 00000000ffffffff R09: 00007ffdec7a06c0
R10: 0000555577fbfc7b R11: 0000000000000246 R12: 00007f26fc0a2105
R13: 00007ffdec7a19b0 R14: 0000555577fbfc20 R15: 00007ffdec7a19f0
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:destroy_workqueue+0x5a2/0xa00
Code: 3f 0f 87 24 01 00 00 e8 0c 58 31 00 89 de 48 89 ef e8 52 6b fe ff 49 89 c7 48 85 c0 74 41 e8 f5 57 31 00 4c 89 fa 48 c1 ea 03 <42> 80 3c 22 00 0f 85 89 03 00 00 49 8b 3f e8 bb 50 7b 03 4c 89 ff
RSP: 0018:ffff888016b3fcb8 EFLAGS: 00010212
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8140fc07
RDX: 000000000308a780 RSI: ffffffff81428f8b RDI: 0000000000000005
RBP: ffff888047aa9800 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: ffffffff85852560 R14: ffffed1008f55339 R15: 0000000018453c00
FS: 0000555577fbe400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff43429c48 CR3: 000000004503b000 CR4: 0000000000350ef0
BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:51
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 291, name: syz-executor.4
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
CPU: 1 UID: 0 PID: 291 Comm: syz-executor.4 Tainted: G D W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary)
Tainted: [D]=DIE, [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xfa/0x120
__might_resched+0x2f3/0x510
exit_signals+0x25/0x940
do_exit+0x2db/0x2970
make_task_dead+0x174/0x3b0
rewind_stack_and_make_dead+0x16/0x20
RIP: 0033:0x7f26fc049f87
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdec7a0828 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00000000000000e9 RCX: 00007f26fc049f87
RDX: 00007ffdec7a08fb RSI: 000000000000000a RDI: 00007ffdec7a08f0
RBP: 00007ffdec7a08f0 R08: 00000000ffffffff R09: 00007ffdec7a06c0
R10: 0000555577fbfc7b R11: 0000000000000246 R12: 00007f26fc0a2105
R13: 00007ffdec7a19b0 R14: 0000555577fbfc20 R15: 00007ffdec7a19f0
------------[ cut here ]------------
Voluntary context switch within RCU read-side critical section!
WARNING: kernel/rcu/tree_plugin.h:332 at rcu_note_context_switch+0xa96/0x1b00, CPU#0: syz-executor.4/291
Modules linked in:
CPU: 0 UID: 0 PID: 291 Comm: syz-executor.4 Tainted: G D W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary)
Tainted: [D]=DIE, [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:rcu_note_context_switch+0xa96/0x1b00
Code: 00 00 00 65 48 8b 3d 41 8c 27 06 e8 84 11 fd ff e9 1a f8 ff ff c6 05 9a 42 e4 04 01 90 48 c7 c7 a0 8a c9 84 e8 0b 39 dd ff 90 <0f> 0b 90 90 e9 3a f6 ff ff 48 b8 00 00 00 00 00 fc ff df 48 c1 ea
RSP: 0018:ffff888016b3f7c0 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffff88806ce37d00 RCX: ffffffff8139de70
RDX: ffff888013469b80 RSI: ffffffff8139de7e RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed100d9c4801
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888013469b80
R13: 0000000000000000 R14: ffff888013469b80 R15: ffffffff84bce0d5
FS: 0000000000000000(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe97e69d020 CR3: 000000000edf3000 CR4: 0000000000350ef0
Call Trace:
__schedule+0x217/0x3590
schedule+0xdb/0x390
schedule_preempt_disabled+0x10/0x20
__mutex_lock+0x813/0x1020
exp_funnel_lock+0x2c7/0x5c0
synchronize_rcu_expedited+0x27e/0x420
namespace_unlock+0x4b6/0x810
put_mnt_ns+0xf5/0x120
free_nsproxy+0x3a/0x400
switch_task_namespaces+0xe2/0x100
do_exit+0x841/0x2970
make_task_dead+0x174/0x3b0
rewind_stack_and_make_dead+0x16/0x20
RIP: 0033:0x7f26fc049f87
Code: Unable to access opcode bytes at 0x7f26fc049f5d.
RSP: 002b:00007ffdec7a0828 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00000000000000e9 RCX: 00007f26fc049f87
RDX: 00007ffdec7a08fb RSI: 000000000000000a RDI: 00007ffdec7a08f0
RBP: 00007ffdec7a08f0 R08: 00000000ffffffff R09: 00007ffdec7a06c0
R10: 0000555577fbfc7b R11: 0000000000000246 R12: 00007f26fc0a2105
R13: 00007ffdec7a19b0 R14: 0000555577fbfc20 R15: 00007ffdec7a19f0
irq event stamp: 802781
hardirqs last enabled at (802781): [] cond_local_irq_enable.isra.0+0x2e/0x40
hardirqs last disabled at (802780): [] exc_general_protection+0x32/0x330
softirqs last enabled at (802496): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (802437): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
kmemleak: 2157 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 0f 87 24 01 00 00 ja 0x12a
6: e8 0c 58 31 00 callq 0x315817
b: 89 de mov %ebx,%esi
d: 48 89 ef mov %rbp,%rdi
10: e8 52 6b fe ff callq 0xfffe6b67
15: 49 89 c7 mov %rax,%r15
18: 48 85 c0 test %rax,%rax
1b: 74 41 je 0x5e
1d: e8 f5 57 31 00 callq 0x315817
22: 4c 89 fa mov %r15,%rdx
25: 48 c1 ea 03 shr $0x3,%rdx
* 29: 42 80 3c 22 00 cmpb $0x0,(%rdx,%r12,1) <-- trapping instruction
2e: 0f 85 89 03 00 00 jne 0x3bd
34: 49 8b 3f mov (%r15),%rdi
37: e8 bb 50 7b 03 callq 0x37b50f7
3c: 4c 89 ff mov %r15,%rdi