WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#0: in:imklog/175
Modules linked in:
CPU: 0 UID: 0 PID: 175 Comm: in:imklog Not tainted 6.18.0-rc4-next-20251104 #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 d7 f1 5b 00 e9 a9 fe ff ff e8 3d f2 1e 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 2c f2 1e 00 90 0f 0b 90 45 31
RSP: 0018:ffff8880169df768 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880169df880 RCX: ffffffff81559466
RDX: ffff888015b61bc0 RSI: ffffffff81559633 RDI: 0000000000000006
RBP: ffff8880169df848 R08: 0000000000001102 R09: 000001363e75a1be
R10: 0000000000000000 R11: 000041698200001a R12: ffffffff85d2e3d0
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS: 00007fdbf08a7700(0000) GS:ffff8880e53a8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe99fc4f48 CR3: 000000000e995000 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/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdbf12ea08c
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:00007fdbf08864d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdbf12ea08c
RDX: 0000000000001fa0 RSI: 00007fdbf0886d00 RDI: 0000000000000005
RBP: 00005555ba2d84c0 R08: 0000000000000000 R09: 00005555ba2d4e88
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdbf0886d00
R13: 0000000000001fa0 R14: 00007fdbf0886d00 R15: 00007fdbf0886d40
irq event stamp: 35169
hardirqs last enabled at (35177): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (35186): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (35116): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (35111): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
loop6: detected capacity change from 0 to 184
loop6: detected capacity change from 0 to 184
loop0: detected capacity change from 0 to 136
ISOFS: Unable to identify CD-ROM format.
loop6: detected capacity change from 0 to 184
loop0: detected capacity change from 0 to 136
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 16887 Comm: syz-executor.0 Tainted: G W 6.18.0-rc4-next-20251104 #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_node_noprof+0x87/0x6b0
__alloc_skb+0x2ab/0x370
alloc_uevent_skb+0x7b/0x210
kobject_uevent_env+0xa8c/0xf90
loop_configure+0xe31/0x15a0
lo_ioctl+0x66d/0x1ca0
blkdev_ioctl+0x365/0x6d0
__x64_sys_ioctl+0x18f/0x210
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f39bcd0d8d7
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:00007f39ba282f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f39bcd57970 RCX: 00007f39bcd0d8d7
RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000004 R14: 0000000020000218 R15: 0000000000000001
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65 sclass=netlink_route_socket pid=16891 comm=syz-executor.5
loop6: detected capacity change from 0 to 184
loop6: detected capacity change from 0 to 184
ISOFS: Unable to identify CD-ROM format.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=59 sclass=netlink_route_socket pid=16891 comm=syz-executor.5
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=27 sclass=netlink_route_socket pid=16891 comm=syz-executor.5
netlink: 748 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 568 bytes leftover after parsing attributes in process `syz-executor.5'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65 sclass=netlink_route_socket pid=16946 comm=syz-executor.5