Oops: general protection fault, probably for non-canonical address 0x69645f656c6f6877: 0000 [#1] PREEMPT SMP PTI
CPU: 0 UID: 0 PID: 4968 Comm: syz.5.16 Not tainted 6.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:rcu_do_batch kernel/rcu/tree.c:2567 [inline]
RIP: 0010:rcu_core+0x45d/0x930 kernel/rcu/tree.c:2823
Code: 31 c9 41 56 e8 44 79 fb ff 48 83 c4 08 4d 8b 7c 24 08 4d 85 ff 0f 84 2f 01 00 00 49 c7 44 24 08 00 00 00 00 4c 89 e7 4d 89 fb <41> ff d3 66 90 48 c7 c7 a8 1c d8 83 4c 89 f6 e8 ef a8 fb ff 65 8b
RSP: 0018:ffffc90000003ee8 EFLAGS: 00010206
RAX: d522498c61ca6d00 RBX: ffff888102738000 RCX: 0000000000000000
RDX: 000000000efd13c5 RSI: ffffffff83832356 RDI: ffff88817b04cae8
RBP: 0000000000000006 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000989680 R11: 69645f656c6f6877 R12: ffff88817b04cae8
R13: ffff888237c32440 R14: ffffffff8122b4ff R15: 69645f656c6f6877
FS: 00007f082275b6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f2f568a220 CR3: 0000000103f76000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
handle_softirqs+0x157/0x480 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0x75/0x160 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x398/0x500 kernel/printk/printk.c:3211
Code: 89 fa e8 4b 34 00 00 41 89 c5 4c 89 e7 e8 90 29 00 00 80 7d 00 00 74 26 e9 36 01 00 00 48 8b 44 24 40 48 ff c0 49 89 44 24 58 <49> 8b 44 24 58 48 8b 5c 24 20 80 7d 00 00 0f 85 15 01 00 00 48 3b
RSP: 0018:ffffc900037eb520 EFLAGS: 00000206
RAX: d522498c61ca6d00 RBX: 0000000000000246 RCX: 0000000000000003
RDX: 0000000000000006 RSI: ffffffff83991b77 RDI: ffffffff838f8a41
RBP: ffffc900037eb5cf R08: 0000000000000000 R09: 0000000000000000
R10: 5b5d373037343138 R11: ffffffff81e06290 R12: ffffffff83eadc98
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
__console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
console_unlock+0x6c/0x100 kernel/printk/printk.c:3309
vprintk_emit+0x248/0x400 kernel/printk/printk.c:2432
_printk+0x58/0x80 kernel/printk/printk.c:2457
dump_mapping+0x174/0x230 fs/inode.c:709
__dump_folio mm/debug.c:99 [inline]
__dump_page mm/debug.c:162 [inline]
dump_page+0x28c/0x420 mm/debug.c:170
find_lock_entries+0x3a3/0x3c0 mm/filemap.c:2113
shmem_undo_range+0x11e/0x650 mm/shmem.c:1022
shmem_truncate_range mm/shmem.c:1152 [inline]
shmem_evict_inode+0x13b/0x300 mm/shmem.c:1280
evict+0x1f7/0x370 fs/inode.c:796
__dentry_kill+0xaa/0x200 fs/dcache.c:625
dput+0xff/0x1c0 fs/dcache.c:867
__fput+0x121/0x2a0 fs/file_table.c:458
task_work_run+0x82/0xb0 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x132/0x300 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f082198ba0a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24
RSP: 002b:00007f082275ae50 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: ffffffffffffffff RCX: 00007f082198ba0a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000016
R13: 00007f082275aeb0 R14: 000000000000593f R15: 0000000020000380
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:rcu_do_batch kernel/rcu/tree.c:2567 [inline]
RIP: 0010:rcu_core+0x45d/0x930 kernel/rcu/tree.c:2823
Code: 31 c9 41 56 e8 44 79 fb ff 48 83 c4 08 4d 8b 7c 24 08 4d 85 ff 0f 84 2f 01 00 00 49 c7 44 24 08 00 00 00 00 4c 89 e7 4d 89 fb <41> ff d3 66 90 48 c7 c7 a8 1c d8 83 4c 89 f6 e8 ef a8 fb ff 65 8b
RSP: 0018:ffffc90000003ee8 EFLAGS: 00010206
RAX: d522498c61ca6d00 RBX: ffff888102738000 RCX: 0000000000000000
RDX: 000000000efd13c5 RSI: ffffffff83832356 RDI: ffff88817b04cae8
RBP: 0000000000000006 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000989680 R11: 69645f656c6f6877 R12: ffff88817b04cae8
R13: ffff888237c32440 R14: ffffffff8122b4ff R15: 69645f656c6f6877
FS: 00007f082275b6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f2f568a220 CR3: 0000000103f76000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 31 c9 xor %ecx,%ecx
2: 41 56 push %r14
4: e8 44 79 fb ff call 0xfffb794d
9: 48 83 c4 08 add $0x8,%rsp
d: 4d 8b 7c 24 08 mov 0x8(%r12),%r15
12: 4d 85 ff test %r15,%r15
15: 0f 84 2f 01 00 00 je 0x14a
1b: 49 c7 44 24 08 00 00 movq $0x0,0x8(%r12)
22: 00 00
24: 4c 89 e7 mov %r12,%rdi
27: 4d 89 fb mov %r15,%r11
* 2a: 41 ff d3 call *%r11 <-- trapping instruction
2d: 66 90 xchg %ax,%ax
2f: 48 c7 c7 a8 1c d8 83 mov $0xffffffff83d81ca8,%rdi
36: 4c 89 f6 mov %r14,%rsi
39: e8 ef a8 fb ff call 0xfffba92d
3e: 65 gs
3f: 8b .byte 0x8b