Oops: general protection fault, probably for non-canonical address 0xdffffc0000000032: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000190-0x0000000000000197]
CPU: 1 UID: 0 PID: 4000 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: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:ffff888046e8f780 EFLAGS: 00010012
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: ffffc90009029000
RDX: 0000000000040000 RSI: ffffffff818995b7 RDI: 0000000000000191
RBP: ffff888046e8f9f0 R08: ffff88806cf31340 R09: ffffe8ffffd16b08
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806cf31340 R15: dffffc0000000000
FS: 00007f0e4851d700(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0e4b0bb018 CR3: 000000000d0f1000 CR4: 0000000000350ef0
Call Trace:
perf_trace_run_bpf_submit+0xef/0x180
perf_trace_preemptirq_template+0x259/0x430
trace_irq_disable.constprop.0+0xa6/0x100
_raw_spin_lock_irqsave+0x53/0x60
try_to_wake_up+0xa0/0x11d0
wake_up_q+0xa1/0x130
futex_wake+0x47e/0x540
do_futex+0x26d/0x370
__x64_sys_futex+0x1c9/0x4d0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0e4afa7b19
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:00007f0e4851d218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f0e4b0baf68 RCX: 00007f0e4afa7b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f0e4b0baf6c
RBP: 00007f0e4b0baf60 R08: 0000000000000009 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f0e4b0baf6c
R13: 00007ffdf426445f R14: 00007f0e4851d300 R15: 0000000000022000
Modules linked in:
---[ end trace 0000000000000000 ]---
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:ffff888046e8f780 EFLAGS: 00010012
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: ffffc90009029000
RDX: 0000000000040000 RSI: ffffffff818995b7 RDI: 0000000000000191
RBP: ffff888046e8f9f0 R08: ffff88806cf31340 R09: ffffe8ffffd16b08
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806cf31340 R15: dffffc0000000000
FS: 00007f0e4851d700(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0e4b0bb018 CR3: 000000000d0f1000 CR4: 0000000000350ef0
note: syz-executor.4[4000] exited with irqs disabled
note: syz-executor.4[4000] exited with preempt_count 2
loop7: detected capacity change from 0 to 140
EXT4-fs (loop7): warning: mounting unchecked fs, running e2fsck is recommended
EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs warning (device sda): ext4_group_extend:1862: can't shrink FS - resize aborted
EXT4-fs warning (device sda): ext4_group_extend:1862: can't shrink FS - resize aborted
EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000.
loop7: detected capacity change from 0 to 140
EXT4-fs (loop7): warning: mounting unchecked fs, running e2fsck is recommended
EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
kmemleak: Found object by alias at 0x607f1a639b0c
CPU: 1 UID: 0 PID: 4007 Comm: syz-executor.2 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+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: 0033:0x7fd0c07ceb19
Code: Unable to access opcode bytes at 0x7fd0c07ceaef.
RSP: 002b:00007ffe05bd03f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fd0c07ceb19
RDX: 00007fd0c078172b RSI: ffffffffffffffbc RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000001b2d334130 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe05bd04e0
kmemleak: Object (percpu) 0x607f1a639b08 (size 8):
kmemleak: comm "syz-executor.5", pid 4010, jiffies 4294818125
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+0x2cf/0x8c0
submit_bh_wbc+0x286/0x720
write_dirty_buffer+0xca/0x170
__flush_batch+0x107/0x2d0
jbd2_log_do_checkpoint+0x810/0xb20
jbd2_journal_flush+0x1a8/0xc20
__ext4_ioctl+0x2d2e/0x38b0
__x64_sys_ioctl+0x18f/0x210
do_syscall_64+0xbf/0x360
EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000.
loop7: detected capacity change from 0 to 140
EXT4-fs (loop7): warning: mounting unchecked fs, running e2fsck is recommended
EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
loop2: detected capacity change from 0 to 4
EXT4-fs (loop2): bad geometry: block count 64 exceeds size of device (2 blocks)
EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000.
loop2: detected capacity change from 0 to 4
EXT4-fs (loop2): bad geometry: block count 64 exceeds size of device (2 blocks)
loop7: detected capacity change from 0 to 140
EXT4-fs (loop7): warning: mounting unchecked fs, running e2fsck is recommended
kmemleak: Found object by alias at 0x607f1a639b0c
CPU: 0 UID: 0 PID: 4065 Comm: syz-executor.2 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+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: 0033:0x7fd0c07ceb19
Code: Unable to access opcode bytes at 0x7fd0c07ceaef.
RSP: 002b:00007fd0bdd02218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fd0c08e20e8 RCX: 00007fd0c07ceb19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd0c08e20e8
RBP: 00007fd0c08e20e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd0c08e20ec
R13: 00007ffe05bd01cf R14: 00007fd0bdd02300 R15: 0000000000022000
kmemleak: Object (percpu) 0x607f1a639b08 (size 8):
kmemleak: comm "syz-executor.7", pid 4073, jiffies 4294827944
kmemleak: min_count = 1
kmemleak: count = 0
kmemleak: flags = 0x21
----------------
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