copy_process+0x3ab7/0x73c0
kernel_clone+0xea/0x7f0
__do_sys_clone3+0x1f5/0x280
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
unregister_netdevice: waiting for lo to become free. Usage count = 67
loop7: detected capacity change from 0 to 6
FAT-fs (loop7): Directory bread(block 6) failed
FAT-fs (loop7): Directory bread(block 7) failed
FAT-fs (loop7): Directory bread(block 8) failed
FAT-fs (loop7): Directory bread(block 9) failed
FAT-fs (loop7): Directory bread(block 6) failed
FAT-fs (loop7): Directory bread(block 7) failed
FAT-fs (loop7): Directory bread(block 8) failed
FAT-fs (loop7): Directory bread(block 9) failed
kmemleak: Found object by alias at 0x607f1a63998c
CPU: 0 UID: 0 PID: 4014 Comm: syz-executor.7 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
Call Trace:
dump_stack_lvl+0xca/0x120
__lookup_object+0x94/0xb0
delete_object_full+0x27/0x70
free_percpu+0x30/0x1160
futex_hash_free+0x38/0xc0
mmput+0x2d3/0x390
do_exit+0x79d/0x2970
do_group_exit+0xd3/0x2a0
__x64_sys_exit_group+0x3e/0x50
x64_sys_call+0x18c5/0x18d0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff54379eb19
Code: Unable to access opcode bytes at 0x7ff54379eaef.
RSP: 002b:00007ffd38567538 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007ff54379eb19
RDX: 00007ff54375172b RSI: ffffffffffffffbc RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000001b2d0248a0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd38567620
kmemleak: Object (percpu) 0x607f1a639980 (size 16):
kmemleak: comm "syz-executor.7", pid 286, jiffies 4294817976
kmemleak: min_count = 1
kmemleak: count = 0
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
mm_init+0x99b/0x1170
copy_process+0x3ab7/0x73c0
kernel_clone+0xea/0x7f0
__do_sys_clone+0xce/0x120
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
kmemleak: Found object by alias at 0x607f1a639984
CPU: 1 UID: 0 PID: 4045 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
Call Trace:
dump_stack_lvl+0xca/0x120
__lookup_object+0x94/0xb0
delete_object_full+0x27/0x70
free_percpu+0x30/0x1160
futex_hash_free+0x38/0xc0
mmput+0x2d3/0x390
do_exit+0x79d/0x2970
do_group_exit+0xd3/0x2a0
get_signal+0x2315/0x2340
arch_do_signal_or_restart+0x80/0x790
exit_to_user_mode_loop+0x8b/0x110
do_syscall_64+0x2f7/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f545b9beb19
Code: Unable to access opcode bytes at 0x7f545b9beaef.
RSP: 002b:00007f5458f34188 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: fffffffffffffffc RBX: 00007f545bad1f60 RCX: 00007f545b9beb19
RDX: 0000000000000002 RSI: 0000000020000380 RDI: 0000000000000005
RBP: 00007f545ba18f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc3148a5af R14: 00007f5458f34300 R15: 0000000000022000
kmemleak: Object (percpu) 0x607f1a639980 (size 8):
kmemleak: comm "syz-executor.1", pid 4045, jiffies 4294818453
kmemleak: min_count = 1
kmemleak: count = 0
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
percpu_ref_init+0x37/0x400
blkg_alloc+0xe9/0x7d0
blkg_create+0xe08/0x1420
bio_associate_blkg_from_css+0xe06/0x1380
bio_associate_blkg+0x10e/0x2a0
bio_init+0x2dd/0x570
bio_alloc_bioset+0x4c5/0x8c0
iomap_dio_alloc_bio.isra.0+0x88/0xc0
iomap_dio_bio_iter+0x8aa/0x1550
__iomap_dio_rw+0x10a1/0x1cf0
iomap_dio_rw+0x40/0xa0
ext4_file_write_iter+0xe0b/0x1990
do_iter_readv_writev+0x5af/0x910
vfs_writev+0x2d4/0xcd0
do_pwritev+0x1ab/0x280
Oops: general protection fault, probably for non-canonical address 0xdffffc0020000032: 0000 [#1] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000100000190-0x0000000100000197]
CPU: 1 UID: 0 PID: 4027 Comm: syz-executor.0 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:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff88806cf08700 EFLAGS: 00010012
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff88801721b700 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff88806cf08970 R08: ffff88806cf313e8 R09: ffffe8ffffd16988
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806cf313e8 R15: dffffc0000000000
FS: 00007f741f193700(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff20206ff8 CR3: 000000001e984000 CR4: 0000000000350ef0
Call Trace:
perf_trace_run_bpf_submit+0xef/0x180
perf_trace_lock+0x337/0x5d0
lock_release+0x1ab/0x290
_raw_spin_unlock_irqrestore+0x1a/0x50
__folio_end_writeback+0x5b3/0xae0
folio_end_writeback+0x11f/0x430
ext4_finish_bio+0x709/0x940
ext4_end_bio+0x14b/0x580
bio_endio+0x5ad/0x6b0
blk_update_request+0x2c5/0x1060
scsi_end_request+0x7a/0xa00
scsi_io_completion+0xbf/0x1640
scsi_complete+0x114/0x380
blk_complete_reqs+0xb2/0xf0
handle_softirqs+0x1b1/0x770
__irq_exit_rcu+0xc4/0x100
irq_exit_rcu+0x9/0x20
sysvec_call_function_single+0xa6/0xc0
asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:do_syscall_64+0x8e/0x360
Code: 00 00 48 39 c3 0f 85 c2 02 00 00 48 8b 7d 08 e8 88 62 00 00 90 e8 82 04 c1 fc 90 90 e8 cb 05 c1 fc fb 65 48 8b 05 6a 09 c9 02 <48> 8b 50 08 f6 c2 3f 0f 85 06 02 00 00 90 90 41 81 fc d5 01 00 00
RSP: 0018:ffff88804720ff30 EFLAGS: 00000206
RAX: ffff88801721b700 RBX: ffff88804720ff58 RCX: ffffffff817c2b86
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84bb26a5
RBP: ffff88804720ff48 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8643ac57 R11: 0000000000000000 R12: 00000000000000ca
R13: 00000000000000ca R14: 0000000000000000 R15: 0000000000000000
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7421c1db19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f741f193218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f7421d30f68 RCX: 00007f7421c1db19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f7421d30f6c
RBP: 00007f7421d30f60 R08: 0000000000000009 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f7421d30f6c
R13: 00007ffff78425df R14: 00007f741f193300 R15: 0000000000022000
Modules linked in:
---[ end trace 0000000000000000 ]---
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000032: 0000 [#2] SMP KASAN NOPTI
RIP: 0010:perf_tp_event+0x175/0xe70
KASAN: null-ptr-deref in range [0x0000000000000190-0x0000000000000197]
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
CPU: 0 UID: 0 PID: 4048 Comm: syz-executor.0 Tainted: G D W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary)
RSP: 0018:ffff88806cf08700 EFLAGS: 00010012
Tainted: [D]=DIE, [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RIP: 0010:perf_tp_event+0x175/0xe70
RDX: ffff88801721b700 RSI: ffffffff818995b7 RDI: 0000000100000190
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RBP: ffff88806cf08970 R08: ffff88806cf313e8 R09: ffffe8ffffd16988
RSP: 0018:ffff888048be7240 EFLAGS: 00010212
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806cf313e8 R15: dffffc0000000000
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: ffffc900042ab000
FS: 00007f741f193700(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
RDX: 0000000000040000 RSI: ffffffff818995b7 RDI: 0000000000000191
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
RBP: ffff888048be74b0 R08: ffff88806ce31340 R09: ffffe8ffffc16988
CR2: 00007fff20206ff8 CR3: 000000001e984000 CR4: 0000000000350ef0
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
----------------
Code disassembly (best guess), 1 bytes skipped:
0: df 48 89 fisttps -0x77(%rax)
3: 85 a8 fd ff ff 48 test %ebp,0x48fffffd(%rax)
9: c1 e8 03 shr $0x3,%eax
c: 4c 01 e0 add %r12,%rax
f: 48 89 85 c8 fd ff ff mov %rax,-0x238(%rbp)
16: e8 c9 51 ea ff callq 0xffea51e4
1b: 48 8d bb f0 01 00 00 lea 0x1f0(%rbx),%rdi
22: 48 89 f8 mov %rdi,%rax
25: 48 c1 e8 03 shr $0x3,%rax
* 29: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 74 08 je 0x3a
32: 3c 03 cmp $0x3,%al
34: 0f 8e c5 0b 00 00 jle 0xbff
3a: 44 rex.R
3b: 8b .byte 0x8b
3c: ab stos %eax,%es:(%rdi)
3d: f0 lock
3e: 01 .byte 0x1