RBP: 00007f2d17f0f1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff708dd27f R14: 00007f2d17f0f300 R15: 0000000000022000
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#1: in:imklog/177
Modules linked in:
CPU: 1 UID: 0 PID: 177 Comm: in:imklog Not tainted 6.18.0-rc4-next-20251107 #1 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:get_data+0x364/0x400
Code: e8 83 e0 07 83 c0 03 38 d0 0f 8c be fe ff ff 84 d2 0f 84 b6 fe ff ff 48 89 ef e8 57 c7 5c 00 e9 a9 fe ff ff e8 7d 1d 1f 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 6c 1d 1f 00 90 0f 0b 90 45 31
RSP: 0018:ffff88801b6d7768 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88801b6d7880 RCX: ffffffff8155afe6
RDX: ffff888015f79bc0 RSI: ffffffff8155b1b3 RDI: 0000000000000006
RBP: ffff88801b6d7848 R08: 000000000000103a R09: 0000005b8983a87b
R10: 0000000000000000 R11: 000014bb82000016 R12: ffffffff85d2e610
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS: 00007efbfedde700(0000) GS:ffff8880e5498000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c4bb02a300 CR3: 000000000b75e000 CR4: 0000000000350ef0
Call Trace:
_prb_read_valid+0x2f3/0x830
prb_read_valid+0x78/0xa0
syslog_print+0x37c/0x5c0
do_syslog.part.0+0x20b/0x5b0
do_syslog+0xcd/0x110
kmsg_read+0x8e/0xc0
loop7: detected capacity change from 0 to 4096
proc_reg_read+0x120/0x310
vfs_read+0x1eb/0xc70
ksys_read+0x121/0x240
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efbff82108c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 89 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 bf fc ff ff 48
RSP: 002b:00007efbfedbd4d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efbff82108c
RDX: 0000000000001fa0 RSI: 00007efbfedbdd00 RDI: 0000000000000005
RBP: 000055748fba44c0 R08: 0000000000000000 R09: 000055748fba0e88
R10: 0000000000000000 R11: 0000000000000246 R12: 00007efbfedbdd00
R13: 0000000000001fa0 R14: 00007efbfedbdd00 R15: 00007efbfedbdd41
irq event stamp: 36991
hardirqs last enabled at (36999): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (37008): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (36898): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (36705): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
Quota error (device loop7): v2_read_file_info: Number of blocks too big for quota file size (120259090432 > 6144).
EXT4-fs warning (device loop7): ext4_enable_quotas:7177: Failed to enable quota tracking (type=1, err=-117, ino=4). Please run e2fsck to fix.
EXT4-fs (loop7): mount failed
loop2: detected capacity change from 0 to 4096
loop7: detected capacity change from 0 to 4096
Quota error (device loop7): v2_read_file_info: Number of blocks too big for quota file size (120259090432 > 6144).
EXT4-fs warning (device loop2): ext4_enable_quotas:7177: Failed to enable quota tracking (type=1, err=-22, ino=4). Please run e2fsck to fix.
EXT4-fs warning (device loop7): ext4_enable_quotas:7177: Failed to enable quota tracking (type=1, err=-117, ino=4). Please run e2fsck to fix.
EXT4-fs (loop2): mount failed
EXT4-fs (loop7): mount failed
loop3: detected capacity change from 0 to 4096
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 5340 Comm: syz-executor.0 Tainted: G W 6.18.0-rc4-next-20251107 #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+0xfa/0x120
should_fail_ex+0x4d7/0x5e0
_copy_to_user+0x32/0xd0
simple_read_from_buffer+0xe0/0x180
proc_fail_nth_read+0x18a/0x240
vfs_read+0x1eb/0xc70
ksys_read+0x121/0x240
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2d1a94c69c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 2f fd ff ff 48
RSP: 002b:00007f2d17f0f170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2d1a94c69c
RDX: 000000000000000f RSI: 00007f2d17f0f1e0 RDI: 0000000000000006
RBP: 00007f2d17f0f1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff708dd27f R14: 00007f2d17f0f300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 5338 Comm: syz-executor.6 Tainted: G W 6.18.0-rc4-next-20251107 #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+0xfa/0x120
should_fail_ex+0x4d7/0x5e0
should_fail_alloc_page+0xe0/0x110
prepare_alloc_pages+0x1eb/0x550
__alloc_frozen_pages_noprof+0x17f/0x1f10
alloc_pages_mpol+0xed/0x340
vma_alloc_folio_noprof+0xe9/0x230
__handle_mm_fault+0x14be/0x31c0
handle_mm_fault+0x2d8/0x750
do_user_addr_fault+0x50c/0x1760
exc_page_fault+0xb0/0x180
asm_exc_page_fault+0x26/0x30
RIP: 0010:rep_movs_alternative+0x75/0x90
Code: 05 e9 df c0 03 00 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01 c6 48 29 c1 48 89 c8 48 c1 e9 03 83 e0 07 48 a5 89 c1 85 c9 75 91 e9 ad c0 03 00 48 8d 0c c8 eb 86 0f 1f
RSP: 0018:ffff88801b7bfc18 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000001000 RCX: 0000000000000048
RDX: 0000000000000000 RSI: ffff888015c3edc0 RDI: 0000000020013000
RBP: 0000000020012240 R08: 0000000000000000 R09: ffffed1002b87dff
R10: ffff888015c3efff R11: 0000000000000000 R12: ffff888015c3e000
R13: 0000000020013240 R14: 00007ffffffff000 R15: 0000000000000000
_copy_to_user+0xbe/0xd0
pagemap_read+0x4f1/0x830
vfs_read+0x1eb/0xc70
ksys_read+0x121/0x240
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f83c577ab19
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:00007f83c2cf0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f83c588df60 RCX: 00007f83c577ab19
RDX: 0000000000080000 RSI: 0000000020000240 RDI: 0000000000000003
RBP: 00007f83c2cf01d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd4e589faf R14: 00007f83c2cf0300 R15: 0000000000022000
Quota error (device loop3): v2_read_file_info: Number of blocks too big for quota file size (120259090432 > 6144).
EXT4-fs warning (device loop3): ext4_enable_quotas:7177: Failed to enable quota tracking (type=1, err=-117, ino=4). Please run e2fsck to fix.
EXT4-fs (loop3): mount failed
loop7: detected capacity change from 0 to 4096
EXT4-fs warning (device loop7): ext4_enable_quotas:7177: Failed to enable quota tracking (type=1, err=-22, ino=4). Please run e2fsck to fix.
EXT4-fs (loop7): mount failed
loop2: detected capacity change from 0 to 4096
EXT4-fs warning (device loop2): ext4_enable_quotas:7177: Failed to enable quota tracking (type=1, err=-22, ino=4). Please run e2fsck to fix.
loop3: detected capacity change from 0 to 4096
EXT4-fs (loop2): mount failed
EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000.
----------------
Code disassembly (best guess), 1 bytes skipped:
0: e9 df c0 03 00 jmpq 0x3c0e4
5: 48 8b 06 mov (%rsi),%rax
8: 48 89 07 mov %rax,(%rdi)
b: 48 8d 47 08 lea 0x8(%rdi),%rax
f: 48 83 e0 f8 and $0xfffffffffffffff8,%rax
13: 48 29 f8 sub %rdi,%rax
16: 48 01 c7 add %rax,%rdi
19: 48 01 c6 add %rax,%rsi
1c: 48 29 c1 sub %rax,%rcx
1f: 48 89 c8 mov %rcx,%rax
22: 48 c1 e9 03 shr $0x3,%rcx
26: 83 e0 07 and $0x7,%eax
* 29: f3 48 a5 rep movsq %ds:(%rsi),%es:(%rdi) <-- trapping instruction
2c: 89 c1 mov %eax,%ecx
2e: 85 c9 test %ecx,%ecx
30: 75 91 jne 0xffffffc3
32: e9 ad c0 03 00 jmpq 0x3c0e4
37: 48 8d 0c c8 lea (%rax,%rcx,8),%rcx
3b: eb 86 jmp 0xffffffc3
3d: 0f .byte 0xf
3e: 1f (bad)