RBP: 00007efe50c571d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007efe50c57050
R13: 00007ffe156a05af R14: 00007efe50c57300 R15: 0000000000022000
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#1: in:imklog/174
Modules linked in:
CPU: 1 UID: 0 PID: 174 Comm: in:imklog Not tainted 6.18.0-rc3-next-20251030 #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 17 b8 5b 00 e9 a9 fe ff ff e8 4d bb 1e 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 3c bb 1e 00 90 0f 0b 90 45 31
RSP: 0018:ffff888016357768 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888016357880 RCX: ffffffff81555746
RDX: ffff8880160b5280 RSI: ffffffff81555913 RDI: 0000000000000006
RBP: ffff888016357848 R08: 00000000000010fc R09: 00000079e13ba3a9
R10: 0000000000000000 R11: 0000184082000041 R12: ffffffff85d30790
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS: 00007ff6c7f8c700(0000) GS:ffff8880e54f0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efe50c56f78 CR3: 000000000e5f3000 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
proc_reg_read+0x120/0x310
vfs_read+0x1eb/0xc70
ksys_read+0x121/0x240
do_syscall_64+0xbf/0x390
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff6c89cf08c
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:00007ff6c7f6b4d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff6c89cf08c
RDX: 0000000000001fa0 RSI: 00007ff6c7f6bd00 RDI: 0000000000000005
RBP: 000055d8df6f74c0 R08: 0000000000000000 R09: 000055d8df6f3e88
R10: a3d70a3d70a3d70b R11: 0000000000000246 R12: 00007ff6c7f6bd00
R13: 0000000000001fa0 R14: 00007ff6c7f6bd00 R15: 00007ff6c7f6d74b
irq event stamp: 31475
hardirqs last enabled at (31483): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (31492): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (30774): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (31511): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 6216 Comm: syz-executor.2 Tainted: G W 6.18.0-rc3-next-20251030 #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
lo_ioctl+0x745/0x1ca0
blkdev_ioctl+0x365/0x6d0
__x64_sys_ioctl+0x18f/0x210
do_syscall_64+0xbf/0x390
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efe536e18d7
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 a4 54 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 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:00007efe50c56ef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007efe50c56f40 RCX: 00007efe536e18d7
RDX: 00007efe50c57050 RSI: 0000000000004c05 RDI: 0000000000000006
RBP: 00007efe50c571d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007efe50c57050
R13: 00007ffe156a05af R14: 00007efe50c57300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 6227 Comm: syz-executor.2 Tainted: G W 6.18.0-rc3-next-20251030 #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
lo_ioctl+0x745/0x1ca0
blkdev_ioctl+0x365/0x6d0
__x64_sys_ioctl+0x18f/0x210
do_syscall_64+0xbf/0x390
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efe536e18d7
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 a4 54 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 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:00007efe50c56ef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007efe50c56f40 RCX: 00007efe536e18d7
RDX: 00007efe50c57050 RSI: 0000000000004c05 RDI: 0000000000000006
RBP: 00007efe50c571d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007efe50c57050
R13: 00007ffe156a05af R14: 00007efe50c57300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 6230 Comm: syz-executor.4 Tainted: G W 6.18.0-rc3-next-20251030 #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_failslab+0xc2/0x120
kmem_cache_alloc_noprof+0x80/0x690
__kernfs_new_node+0xd3/0x870
kernfs_new_node+0x13c/0x1e0
__kernfs_create_file+0x55/0x360
sysfs_add_file_mode_ns+0x21c/0x440
internal_create_group+0x571/0xeb0
loop_configure+0xc46/0x15a0
lo_ioctl+0x66d/0x1ca0
blkdev_ioctl+0x365/0x6d0
__x64_sys_ioctl+0x18f/0x210
do_syscall_64+0xbf/0x390
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5dc642d8d7
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 a4 54 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 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:00007f5dc39a2e98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5dc6477970 RCX: 00007f5dc642d8d7
RDX: 0000000000000005 RSI: 0000000000004c00 RDI: 0000000000000006
RBP: 0000000000000006 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000