erofs: (device loop9): z_erofs_get_extent_compressedlen: bogus CBLKCNT @ lcn 73 of nid 36
attempt to access beyond end of device
loop9: rw=0, want=8755230064, limit=16
erofs: (device loop9): z_erofs_readpage: failed to read, err [-117]
BUG: scheduling while atomic: syz.9.1301/4825/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff82217340>] kmap_atomic include/linux/highmem-internal.h:196 [inline]
[<ffffffff82217340>] z_erofs_reload_indexes+0x310/0x410 fs/erofs/zmap.c:148
CPU: 0 PID: 4825 Comm: syz.9.1301 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 __schedule_bug+0x180/0x230 kernel/sched/core.c:5733
 schedule_debug kernel/sched/core.c:5760 [inline]
 __schedule+0xc30/0x14c0 kernel/sched/core.c:6428
 schedule+0x11e/0x1e0 kernel/sched/core.c:6621
 exit_to_user_mode_loop+0x50/0xe0 kernel/entry/common.c:169
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f40525fd819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4051058028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffff8b RBX: 00007f4052876fa0 RCX: 00007f40525fd819
RDX: 000000000000275a RSI: 00002000000000c0 RDI: ffffffffffffff9c
RBP: 00007f4052693c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4052877038 R14: 00007f4052876fa0 R15: 00007ffe7d2b0738
 </TASK>