BUG: scheduling while atomic: syz.0.316/1246/0x00000002
Modules linked in:
CPU: 1 UID: 0 PID: 1246 Comm: syz.0.316 Not tainted syzkaller #0 4b6b95ab3aff47ee35cef28a0a3a23749bede870
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
dump_stack+0x19/0x20 lib/dump_stack.c:129
__schedule_bug+0x12b/0x200 kernel/sched/core.c:6629
schedule_debug kernel/sched/core.c:6656 [inline]
__schedule+0xb85/0x20b0 kernel/sched/core.c:7700
__schedule_loop kernel/sched/core.c:7960 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7975
schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8032
rwsem_down_write_slowpath+0x5c9/0x1b60 kernel/locking/rwsem.c:1239
__down_write_common kernel/locking/rwsem.c:1383 [inline]
__down_write kernel/locking/rwsem.c:1392 [inline]
down_write+0x163/0x2b0 kernel/locking/rwsem.c:1659
kernfs_remove+0x87/0xc0 fs/kernfs/dir.c:1568
sysfs_remove_group+0x22d/0x250 fs/sysfs/group.c:321
dpm_sysfs_remove+0x99/0xd0 drivers/base/power/sysfs.c:837
device_del+0x241/0xcf0 drivers/base/core.c:3856
device_unregister drivers/base/core.c:3922 [inline]
device_destroy+0xb0/0x100 drivers/base/core.c:4521
android_device_destroy+0x118/0x180 drivers/usb/gadget/android_configfs_uevent.c:223
gadgets_drop+0x1d/0x30 drivers/usb/gadget/configfs.c:2075
client_drop_item fs/configfs/dir.c:943 [inline]
configfs_rmdir+0x8b7/0x9b0 fs/configfs/dir.c:1546
vfs_rmdir+0x3db/0x560 fs/namei.c:4348
do_rmdir+0x29a/0x590 fs/namei.c:4407
__do_sys_rmdir fs/namei.c:4426 [inline]
__se_sys_rmdir fs/namei.c:4424 [inline]
__x64_sys_rmdir+0x4b/0x60 fs/namei.c:4424
x64_sys_call+0xaf7/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:85
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f1a6e39e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1a6f292028 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007f1a6e625fa0 RCX: 00007f1a6e39e159
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000600
RBP: 00007f1a6e435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1a6e626038 R14: 00007f1a6e625fa0 R15: 00007ffd87daaac8
------------[ cut here ]------------
WARNING: CPU: 1 PID: 1246 at lib/stackdepot.c:635 stack_depot_save_flags+0x266/0x800 lib/stackdepot.c:633
Modules linked in:
CPU: 1 UID: 0 PID: 1246 Comm: syz.0.316 Tainted: G W syzkaller #0 4b6b95ab3aff47ee35cef28a0a3a23749bede870
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:stack_depot_save_flags+0x266/0x800 lib/stackdepot.c:635
Code: 48 83 3d f4 e5 db 05 00 0f 84 00 04 00 00 48 c7 45 c0 00 00 00 00 48 89 d3 65 8b 05 0c 47 1e 7d 4d 89 d7 a9 00 00 f0 00 74 2d <0f> 0b 48 c7 45 c8 00 00 00 00 9c 8f 45 c8 4c 8b 6d c8 fa 48 c7 c7
RSP: 0018:ffffc90000dff980 EFLAGS: 00010206
RAX: 000000007fffffff RBX: ffff8881f5f810e0 RCX: 0000000000d810e0
RDX: ffff8881f5f810e0 RSI: 0000000000000001 RDI: 00000000c37f0fa7
RBP: ffffc90000dff9e0 R08: 000000006ed202d5 R09: 0000000072ac2200
R10: 000000000000000d R11: ffffffff8175a5c0 R12: 00000000234d810e
R13: 0000000000000000 R14: ffffc90000dff9f0 R15: 000000000000000d
FS: 00007f1a6f2926c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000600 CR3: 000000011c0cc000 CR4: 00000000003526b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
kasan_save_stack mm/kasan/common.c:50 [inline]
kasan_save_track+0x4f/0x80 mm/kasan/common.c:70
kasan_save_free_info+0x44/0x50 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:249 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:266
kasan_slab_free include/linux/kasan.h:234 [inline]
slab_free_hook mm/slub.c:2445 [inline]
slab_free mm/slub.c:4714 [inline]
kfree+0x158/0x440 mm/slub.c:4875
gadget_info_attr_release+0xcb/0x130 drivers/usb/gadget/configfs.c:412
config_item_cleanup fs/configfs/item.c:128 [inline]
config_item_release fs/configfs/item.c:137 [inline]
kref_put include/linux/kref.h:65 [inline]
config_item_put+0x178/0x240 fs/configfs/item.c:149
configfs_rmdir+0x8e8/0x9b0 fs/configfs/dir.c:1550
vfs_rmdir+0x3db/0x560 fs/namei.c:4348
do_rmdir+0x29a/0x590 fs/namei.c:4407
__do_sys_rmdir fs/namei.c:4426 [inline]
__se_sys_rmdir fs/namei.c:4424 [inline]
__x64_sys_rmdir+0x4b/0x60 fs/namei.c:4424
x64_sys_call+0xaf7/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:85
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f1a6e39e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1a6f292028 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007f1a6e625fa0 RCX: 00007f1a6e39e159
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000600
RBP: 00007f1a6e435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1a6e626038 R14: 00007f1a6e625fa0 R15: 00007ffd87daaac8
---[ end trace 0000000000000000 ]---
BUG: scheduling while atomic: syz.0.316/1246/0x00000000
Modules linked in:
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 1246 Comm: syz.0.316 Tainted: G W syzkaller #0 4b6b95ab3aff47ee35cef28a0a3a23749bede870
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:schedule_debug kernel/sched/core.c:6639 [inline]
RIP: 0010:__schedule+0x14e/0x20b0 kernel/sched/core.c:7700
Code: 00 00 48 89 04 24 4c 8d 70 20 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 2c be 3a fc 4d 8b 36 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 13 be 3a fc 49 81 3e 9d 6e ac 57
RSP: 0018:ffffc90000dff2a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8881f6e4fa40 RCX: ffff8881183a1300
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90000dff470 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff0e9f334 R12: 1ffff920001bfe6c
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1103edca0c9
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd1b1bef2f8 CR3: 000000011644a000 CR4: 00000000003526b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:schedule_debug kernel/sched/core.c:6639 [inline]
RIP: 0010:__schedule+0x14e/0x20b0 kernel/sched/core.c:7700
Code: 00 00 48 89 04 24 4c 8d 70 20 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 2c be 3a fc 4d 8b 36 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 13 be 3a fc 49 81 3e 9d 6e ac 57
RSP: 0018:ffffc90000dff2a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8881f6e4fa40 RCX: ffff8881183a1300
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90000dff470 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff0e9f334 R12: 1ffff920001bfe6c
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1103edca0c9
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd1b1bef2f8 CR3: 000000011644a000 CR4: 00000000003526b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 48 89 04 24 mov %rax,(%rsp)
6: 4c 8d 70 20 lea 0x20(%rax),%r14
a: 4c 89 f0 mov %r14,%rax
d: 48 c1 e8 03 shr $0x3,%rax
11: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
16: 74 08 je 0x20
18: 4c 89 f7 mov %r14,%rdi
1b: e8 2c be 3a fc call 0xfc3abe4c
20: 4d 8b 36 mov (%r14),%r14
23: 4c 89 f0 mov %r14,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 f7 mov %r14,%rdi
34: e8 13 be 3a fc call 0xfc3abe4c
39: 49 81 3e 9d 6e ac 57 cmpq $0x57ac6e9d,(%r14)