loop2: detected capacity change from 0 to 16
erofs: (device loop2): mounted with root inode @ nid 36.
BUG: scheduling while atomic: syz.2.17/374/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff822188ec>] kmap_atomic include/linux/highmem-internal.h:196 [inline]
[<ffffffff822188ec>] z_erofs_reload_indexes+0x30c/0x410 fs/erofs/zmap.c:148
CPU: 1 PID: 374 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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+0xc21/0x14a0 kernel/sched/core.c:6428
 schedule+0x11e/0x1e0 kernel/sched/core.c:6621
 schedule_timeout+0xba/0x340 kernel/time/timer.c:1898
 io_schedule_timeout+0x8d/0x100 kernel/sched/core.c:8655
 do_wait_for_common kernel/sched/completion.c:85 [inline]
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common_io+0x16f/0x2e0 kernel/sched/completion.c:123
 wait_for_completion_io+0x13/0x20 kernel/sched/completion.c:171
 z_erofs_runqueue+0x115d/0x11f0 fs/erofs/zdata.c:1514
 z_erofs_readpage+0x25d/0x4d0 fs/erofs/zdata.c:1604
 do_read_cache_page+0x58e/0xb10 mm/filemap.c:-1
 read_cache_page+0x50/0x70 mm/filemap.c:3676
 read_mapping_page include/linux/pagemap.h:513 [inline]
 erofs_readdir+0x149/0x8a0 fs/erofs/dir.c:82
 iterate_dir+0x25c/0x600 fs/readdir.c:-1
 __do_sys_getdents fs/readdir.c:286 [inline]
 __se_sys_getdents+0xf2/0x250 fs/readdir.c:271
 __x64_sys_getdents+0x7b/0x90 fs/readdir.c:271
 x64_sys_call+0xb4/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:79
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fadb34c3e59
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:00007ffc138406b8 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007fadb373cfa0 RCX: 00007fadb34c3e59
RDX: 0000000000000058 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fadb3559e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fadb373cfac R14: 00007fadb373cfa0 R15: 00007fadb373cfa0
 </TASK>
erofs: (device loop2): z_erofs_readpage: failed to read, err [-117]
erofs: (device loop2): erofs_readdir: fail to readdir of logical block 144 of nid 36