EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000.
Oops: general protection fault, probably for non-canonical address 0xfe001bea7e001fed: 0000 [#1] SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0xf000ff53f000ff68-0xf000ff53f000ff6f]
CPU: 1 UID: 0 PID: 274 Comm: syz-executor.1 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:kasan_byte_accessible+0x15/0x30
Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03 48 01 c7 <0f> b6 07 3c 07 0f 96 c0 e9 7e 15 0e 03 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffff8880160ffc08 EFLAGS: 00010086
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff84bde093 RDI: fe001bea7e001fed
RBP: f000ff53f000ff6b R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff8643ac57 R11: 0000000000000001 R12: 0000000000000000
R13: ffffffff84bde093 R14: 0000000000000000 R15: ffff888000000000
FS: 000055556963f400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555569648c58 CR3: 000000003100f000 CR4: 0000000000350ef0
Call Trace:
__kasan_check_byte+0x14/0x50
lock_acquire+0xec/0x2f0
_raw_spin_lock_irq+0x33/0x50
destroy_workqueue+0x5b5/0xa00
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: 0033:0x7f9bce950f87
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:00007fff22e640d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f9bce950f87
RDX: 00007fff22e641a9 RSI: 000000000000000a RDI: 00007fff22e641a0
RBP: 00007fff22e641a0 R08: 00000000ffffffff R09: 00007fff22e63f70
R10: 0000555569640c7b R11: 0000000000000246 R12: 00007f9bce9a9105
R13: 00007fff22e65260 R14: 0000555569640c20 R15: 00007fff22e652a0
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x15/0x30
Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03 48 01 c7 <0f> b6 07 3c 07 0f 96 c0 e9 7e 15 0e 03 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffff8880160ffc08 EFLAGS: 00010086
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff84bde093 RDI: fe001bea7e001fed
RBP: f000ff53f000ff6b R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff8643ac57 R11: 0000000000000001 R12: 0000000000000000
R13: ffffffff84bde093 R14: 0000000000000000 R15: ffff888000000000
FS: 000055556963f400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555569648c58 CR3: 000000003100f000 CR4: 0000000000350ef0
note: syz-executor.1[274] exited with irqs disabled
note: syz-executor.1[274] exited with preempt_count 1
BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:51
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 274, name: syz-executor.1
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
CPU: 1 UID: 0 PID: 274 Comm: syz-executor.1 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: 0033:0x7f9bce950f87
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:00007fff22e640d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f9bce950f87
RDX: 00007fff22e641a9 RSI: 000000000000000a RDI: 00007fff22e641a0
RBP: 00007fff22e641a0 R08: 00000000ffffffff R09: 00007fff22e63f70
R10: 0000555569640c7b R11: 0000000000000246 R12: 00007f9bce9a9105
R13: 00007fff22e65260 R14: 0000555569640c20 R15: 00007fff22e652a0
------------[ 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#1: syz-executor.1/274
Modules linked in:
CPU: 1 UID: 0 PID: 274 Comm: syz-executor.1 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:ffff8880160ff9f0 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffff88806cf37d00 RCX: ffffffff8139de70
RDX: ffff888015825280 RSI: ffffffff8139de7e RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed100d9e4801
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888015825280
R13: 0000000000000000 R14: ffff888015825280 R15: ffff8880173a3600
FS: 0000000000000000(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f130c03a058 CR3: 00000000417e6000 CR4: 0000000000350ef0
Call Trace:
__schedule+0x217/0x3590
schedule+0xdb/0x390
synchronize_rcu_expedited+0x353/0x420
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: 0033:0x7f9bce950f87
Code: Unable to access opcode bytes at 0x7f9bce950f5d.
RSP: 002b:00007fff22e640d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f9bce950f87
RDX: 00007fff22e641a9 RSI: 000000000000000a RDI: 00007fff22e641a0
RBP: 00007fff22e641a0 R08: 00000000ffffffff R09: 00007fff22e63f70
R10: 0000555569640c7b R11: 0000000000000246 R12: 00007f9bce9a9105
R13: 00007fff22e65260 R14: 0000555569640c20 R15: 00007fff22e652a0
irq event stamp: 161148
hardirqs last enabled at (161147): [] _raw_spin_unlock_irq+0x23/0x40
hardirqs last disabled at (161148): [] _raw_spin_lock_irq+0x42/0x50
softirqs last enabled at (160872): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (160821): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 0f 1f 00 nopl (%rax)
5: 90 nop
6: 90 nop
7: 90 nop
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 66 0f 1f 00 nopw (%rax)
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 48 c1 ef 03 shr $0x3,%rdi
27: 48 01 c7 add %rax,%rdi
* 2a: 0f b6 07 movzbl (%rdi),%eax <-- trapping instruction
2d: 3c 07 cmp $0x7,%al
2f: 0f 96 c0 setbe %al
32: e9 7e 15 0e 03 jmpq 0x30e15b5
37: 66 data16
38: 66 data16
39: 2e cs
3a: 0f .byte 0xf
3b: 1f (bad)
3c: 84 00 test %al,(%rax)