R10: 0000000000004100 R11: 0000000000000293 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000020000278 R15: 0000000000000005
EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000.
------------[ cut here ]------------
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-rc2-next-20251024 #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 37 89 5b 00 e9 a9 fe ff ff e8 fd b6 1e 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 ec b6 1e 00 90 0f 0b 90 45 31
RSP: 0018:ffff888016f0f768 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888016f0f880 RCX: ffffffff81555256
RDX: ffff88800fa15280 RSI: ffffffff81555423 RDI: 0000000000000006
RBP: ffff888016f0f848 R08: 0000000000000e41 R09: 000001295c89d34e
R10: 0000000000000000 R11: 00002b1d82000046 R12: ffffffff85d30690
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS: 00007f51b0199700(0000) GS:ffff8880e53f4000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd935b49f78 CR3: 000000000ed49000 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: 0033:0x7f51b0bdc08c
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:00007f51b01784d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f51b0bdc08c
RDX: 0000000000001fa0 RSI: 00007f51b0178d00 RDI: 0000000000000005
RBP: 0000560b7db254c0 R08: 0000000000000000 R09: 0000560b7db21e88
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f51b0178d00
R13: 0000000000001fa0 R14: 00007f51b0178d00 R15: 00007f51b0178d41
irq event stamp: 77745
hardirqs last enabled at (77755): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (77762): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (77336): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (77325): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
EXT4-fs (loop2): fragment/cluster size (65536) != block size (4096)
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 11044 Comm: syz-executor.4 Tainted: G W 6.18.0-rc2-next-20251024 #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
getname_flags.part.0+0x48/0x540
getname_flags+0x95/0xe0
do_sys_openat2+0x9f/0x1b0
__x64_sys_openat+0x142/0x200
do_syscall_64+0xbf/0x390
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd938587a04
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007fd935b49ed0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fd93861e970 RCX: 00007fd938587a04
RDX: 0000000000000002 RSI: 00007fd935b4a000 RDI: 00000000ffffff9c
RBP: 00007fd935b4a000 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 0000000000000005 R14: 00000000200002a8 R15: 0000000000000007
loop3: detected capacity change from 0 to 512
EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000.
loop3: detected capacity change from 0 to 512
EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'.
loop2: detected capacity change from 0 to 8257
EXT4-fs (loop2): fragment/cluster size (65536) != block size (4096)