./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor230271771 <...> Warning: Permanently added '10.128.0.91' (ECDSA) to the list of known hosts. execve("./syz-executor230271771", ["./syz-executor230271771"], 0x7fff4f7bbe30 /* 10 vars */) = 0 brk(NULL) = 0x5555570e7000 brk(0x5555570e7c40) = 0x5555570e7c40 arch_prctl(ARCH_SET_FS, 0x5555570e7300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor230271771", 4096) = 27 brk(0x555557108c40) = 0x555557108c40 brk(0x555557109000) = 0x555557109000 mprotect(0x7f7695230000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/dev/loop3", O_RDONLY) = 3 openat(AT_FDCWD, "/proc/self/exe", O_RDONLY) = 4 syzkaller login: [ 40.873516][ T3606] loop3: detected capacity change from 0 to 1697 [ 40.881098][ T91] ------------[ cut here ]------------ [ 40.886781][ T91] WARNING: CPU: 1 PID: 91 at fs/iomap/iter.c:33 iomap_iter+0xd85/0x1110 [ 40.895410][ T91] Modules linked in: [ 40.899437][ T91] CPU: 1 PID: 91 Comm: kworker/u4:4 Not tainted 5.19.0-rc8-syzkaller-00105-g6e2c0490769e #0 [ 40.909759][ T91] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 40.920012][ T91] Workqueue: loop3 loop_rootcg_workfn [ 40.925460][ T91] RIP: 0010:iomap_iter+0xd85/0x1110 [ 40.930761][ T91] Code: fd ff ff e8 fd e2 cd ff e9 f9 f9 ff ff e8 83 05 81 ff 0f 0b e9 87 f8 ff ff e8 77 05 81 ff 0f 0b e9 98 f7 ff ff e8 6b 05 81 ff <0f> 0b e9 38 f7 ff ff e8 5f 05 81 ff 0f 0b e9 64 f7 ff ff e8 53 05 [ 40.951045][ T91] RSP: 0018:ffffc900015b7668 EFLAGS: 00010293 [ 40.957137][ T91] RAX: 0000000000000000 RBX: ffffc900015b7800 RCX: 0000000000000000 [ 40.965291][ T91] RDX: ffff888017fe8000 RSI: ffffffff81f964a5 RDI: 0000000000000006 [ 40.973353][ T91] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000 [ 40.981423][ T91] R10: d70e000000000000 R11: 0000000000000002 R12: 0000000000000000 [ 40.989454][ T91] R13: d70e000000000000 R14: ffffc900015b7828 R15: ffffc900015b7870 [ 40.997442][ T91] FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 41.006503][ T91] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.013195][ T91] CR2: 00000000016ff258 CR3: 0000000074228000 CR4: 0000000000350ee0 [ 41.021238][ T91] Call Trace: [ 41.024528][ T91] [ 41.027456][ T91] __iomap_dio_rw+0x6b6/0x1a80 [ 41.032335][ T91] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 41.039172][ T91] ? iomap_dio_bio_iter+0x1460/0x1460 [ 41.044575][ T91] ? down_read+0x198/0x440 [ 41.049080][ T91] iomap_dio_rw+0x3c/0xa0 [ 41.053433][ T91] ext4_file_read_iter+0x436/0x600 [ 41.058989][ T91] lo_rw_aio.isra.0+0xa54/0xc50 [ 41.063874][ T91] ? loop_validate_file+0x450/0x450 [ 41.069170][ T91] ? rwlock_bug.part.0+0x90/0x90 [ 41.074126][ T91] ? _raw_spin_unlock_irq+0x1f/0x40 [ 41.079441][ T91] ? _raw_spin_unlock_irq+0x1f/0x40 [ 41.084656][ T91] ? kthread_associate_blkcg+0x1ff/0x720 [ 41.090590][ T91] loop_process_work+0x969/0x2050 [ 41.095613][ T91] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 41.101685][ T91] ? loop_queue_rq+0x11f0/0x11f0 [ 41.106643][ T91] ? lock_release+0x780/0x780 [ 41.111378][ T91] ? lock_downgrade+0x6e0/0x6e0 [ 41.116256][ T91] ? lockdep_hardirqs_on+0x79/0x100 [ 41.121495][ T91] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 41.127615][ T91] process_one_work+0x996/0x1610 [ 41.132636][ T91] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 41.138042][ T91] ? rwlock_bug.part.0+0x90/0x90 [ 41.143041][ T91] ? _raw_spin_lock_irq+0x41/0x50 [ 41.148093][ T91] worker_thread+0x665/0x1080 [ 41.152858][ T91] ? __kthread_parkme+0x15f/0x220 [ 41.157906][ T91] ? process_one_work+0x1610/0x1610 [ 41.163239][ T91] kthread+0x2e9/0x3a0 [ 41.167324][ T91] ? kthread_complete_and_exit+0x40/0x40 [ 41.173091][ T91] ret_from_fork+0x1f/0x30 [ 41.177559][ T91] [ 41.180618][ T91] Kernel panic - not syncing: panic_on_warn set ... [ 41.187214][ T91] CPU: 1 PID: 91 Comm: kworker/u4:4 Not tainted 5.19.0-rc8-syzkaller-00105-g6e2c0490769e #0 [ 41.197276][ T91] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 41.207318][ T91] Workqueue: loop3 loop_rootcg_workfn [ 41.212683][ T91] Call Trace: [ 41.215944][ T91] [ 41.218859][ T91] dump_stack_lvl+0xcd/0x134 [ 41.223439][ T91] panic+0x2d7/0x636 [ 41.227319][ T91] ? panic_print_sys_info.part.0+0x10b/0x10b [ 41.233293][ T91] ? __warn.cold+0x1d1/0x2c5 [ 41.237960][ T91] ? iomap_iter+0xd85/0x1110 [ 41.242539][ T91] __warn.cold+0x1e2/0x2c5 [ 41.247115][ T91] ? iomap_iter+0xd85/0x1110 [ 41.251691][ T91] report_bug+0x1bc/0x210 [ 41.256010][ T91] handle_bug+0x3c/0x60 [ 41.260151][ T91] exc_invalid_op+0x14/0x40 [ 41.264636][ T91] asm_exc_invalid_op+0x16/0x20 [ 41.269485][ T91] RIP: 0010:iomap_iter+0xd85/0x1110 [ 41.274671][ T91] Code: fd ff ff e8 fd e2 cd ff e9 f9 f9 ff ff e8 83 05 81 ff 0f 0b e9 87 f8 ff ff e8 77 05 81 ff 0f 0b e9 98 f7 ff ff e8 6b 05 81 ff <0f> 0b e9 38 f7 ff ff e8 5f 05 81 ff 0f 0b e9 64 f7 ff ff e8 53 05 [ 41.294269][ T91] RSP: 0018:ffffc900015b7668 EFLAGS: 00010293 [ 41.300424][ T91] RAX: 0000000000000000 RBX: ffffc900015b7800 RCX: 0000000000000000 [ 41.308386][ T91] RDX: ffff888017fe8000 RSI: ffffffff81f964a5 RDI: 0000000000000006 [ 41.316353][ T91] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000 [ 41.324322][ T91] R10: d70e000000000000 R11: 0000000000000002 R12: 0000000000000000 [ 41.332292][ T91] R13: d70e000000000000 R14: ffffc900015b7828 R15: ffffc900015b7870 [ 41.340269][ T91] ? iomap_iter+0xd85/0x1110 [ 41.344867][ T91] ? iomap_iter+0xd85/0x1110 [ 41.349462][ T91] __iomap_dio_rw+0x6b6/0x1a80 [ 41.354238][ T91] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 41.360310][ T91] ? iomap_dio_bio_iter+0x1460/0x1460 [ 41.365704][ T91] ? down_read+0x198/0x440 [ 41.370120][ T91] iomap_dio_rw+0x3c/0xa0 [ 41.374801][ T91] ext4_file_read_iter+0x436/0x600 [ 41.379912][ T91] lo_rw_aio.isra.0+0xa54/0xc50 [ 41.384765][ T91] ? loop_validate_file+0x450/0x450 [ 41.391630][ T91] ? rwlock_bug.part.0+0x90/0x90 [ 41.396566][ T91] ? _raw_spin_unlock_irq+0x1f/0x40 [ 41.401788][ T91] ? _raw_spin_unlock_irq+0x1f/0x40 [ 41.407092][ T91] ? kthread_associate_blkcg+0x1ff/0x720 [ 41.412729][ T91] loop_process_work+0x969/0x2050 [ 41.417758][ T91] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 41.423752][ T91] ? loop_queue_rq+0x11f0/0x11f0 [ 41.428687][ T91] ? lock_release+0x780/0x780 [ 41.433356][ T91] ? lock_downgrade+0x6e0/0x6e0 [ 41.438204][ T91] ? lockdep_hardirqs_on+0x79/0x100 [ 41.443408][ T91] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 41.449421][ T91] process_one_work+0x996/0x1610 [ 41.454368][ T91] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 41.459749][ T91] ? rwlock_bug.part.0+0x90/0x90 [ 41.464684][ T91] ? _raw_spin_lock_irq+0x41/0x50 [ 41.469721][ T91] worker_thread+0x665/0x1080 [ 41.474410][ T91] ? __kthread_parkme+0x15f/0x220 [ 41.479433][ T91] ? process_one_work+0x1610/0x1610 [ 41.484631][ T91] kthread+0x2e9/0x3a0 [ 41.488695][ T91] ? kthread_complete_and_exit+0x40/0x40 [ 41.494500][ T91] ret_from_fork+0x1f/0x30 [ 41.499101][ T91] [ 41.502715][ T91] Kernel Offset: disabled [ 41.507902][ T91] Rebooting in 86400 seconds..