erofs: (device loop5): z_erofs_readahead: readahead error at page 75 @ nid 36
erofs: (device loop5): z_erofs_extent_lookback: bogus lookback distance @ nid 36
erofs: (device loop5): z_erofs_readahead: readahead error at page 74 @ nid 36
erofs: (device loop5): z_erofs_readahead: readahead error at page 73 @ nid 36
attempt to access beyond end of device
loop5: rw=524288, want=14425508768, limit=16
BUG: scheduling while atomic: syz.5.1833/7045/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff821da160>] kmap_atomic include/linux/highmem-internal.h:196 [inline]
[<ffffffff821da160>] z_erofs_reload_indexes+0x1d0/0x410 fs/erofs/zmap.c:132
CPU: 0 PID: 7045 Comm: syz.5.1833 Not tainted 5.15.184-syzkaller-00129-g4032a894ccb2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0xee/0x150 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 __schedule_bug+0x174/0x230 kernel/sched/core.c:5710
 schedule_debug kernel/sched/core.c:5737 [inline]
 __schedule+0xc2f/0x14c0 kernel/sched/core.c:6405
 schedule+0x11e/0x1e0 kernel/sched/core.c:6598
 exit_to_user_mode_loop+0x50/0xe0 kernel/entry/common.c:169
 exit_to_user_mode_prepare+0x5a/0xa0 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: 0033:0x7fd365ed8969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd364541038 EFLAGS: 00000246 ORIG_RAX: 00000000000000dd
RAX: 0000000000000000 RBX: 00007fd3660fffa0 RCX: 00007fd365ed8969
RDX: 0000000000000000 RSI: 0000000000004800 RDI: 0000000000000004
RBP: 00007fd365f5aab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd3660fffa0 R15: 00007ffe9fd7b538
 </TASK>