DUID 00:04:53:46:a9:9d:03:7a:46:b2:48:ff:4a:ea:3f:46:f2:43 forked to background, child pid 3173 [ 26.353275][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.365432][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.32' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 47.925441][ T3596] loop0: detected capacity change from 0 to 64 executing program [ 48.000590][ C0] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 [ 48.022610][ T50] ------------[ cut here ]------------ [ 48.028294][ T50] WARNING: CPU: 1 PID: 50 at fs/iomap/iter.c:33 iomap_iter+0xd85/0x1110 [ 48.036845][ T50] Modules linked in: [ 48.040905][ T50] CPU: 1 PID: 50 Comm: kworker/u4:2 Not tainted 5.17.0-rc2-next-20220204-syzkaller #0 [ 48.050763][ T50] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.060999][ T50] Workqueue: loop0 loop_rootcg_workfn [ 48.066522][ T50] RIP: 0010:iomap_iter+0xd85/0x1110 [ 48.071862][ T50] Code: fd ff ff e8 ed 53 cf ff e9 f9 f9 ff ff e8 33 df 83 ff 0f 0b e9 87 f8 ff ff e8 27 df 83 ff 0f 0b e9 98 f7 ff ff e8 1b df 83 ff <0f> 0b e9 38 f7 ff ff e8 0f df 83 ff 0f 0b e9 64 f7 ff ff e8 03 df [ 48.091703][ T50] RSP: 0018:ffffc900012ff678 EFLAGS: 00010293 [ 48.097792][ T50] RAX: 0000000000000000 RBX: ffffc900012ff810 RCX: 0000000000000000 [ 48.105806][ T50] RDX: ffff888012bd9d40 RSI: ffffffff81f4c9d5 RDI: 0000000000000003 [ 48.113822][ T50] RBP: 00000fff80000000 R08: 00000fff80000000 R09: 000000000000000c [ 48.122189][ T50] R10: ffffffff81f4c10b R11: 000000000000003f R12: 0000000000000000 [ 48.130165][ T50] R13: ffffffff80000000 R14: ffffc900012ff838 R15: ffffc900012ff880 [ 48.138198][ T50] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 48.147164][ T50] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.153813][ T50] CR2: 00007f579dee2130 CR3: 000000000b88e000 CR4: 00000000003506e0 [ 48.161865][ T50] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.169823][ T50] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.177876][ T50] Call Trace: [ 48.181154][ T50] [ 48.184123][ T50] __iomap_dio_rw+0x6b2/0x1ae0 [ 48.188922][ T50] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 48.195034][ T50] ? iomap_dio_bio_iter+0x14b0/0x14b0 [ 48.200436][ T50] ? down_read+0x198/0x440 [ 48.204926][ T50] ? rwsem_down_read_slowpath+0xa70/0xa70 [ 48.210665][ T50] iomap_dio_rw+0x38/0x90 [ 48.215072][ T50] ext4_file_read_iter+0x41c/0x5d0 [ 48.220205][ T50] lo_rw_aio.isra.0+0xa99/0xc90 [ 48.225110][ T50] ? loop_validate_file+0x450/0x450 [ 48.230328][ T50] ? rwlock_bug.part.0+0x90/0x90 [ 48.235567][ T50] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 48.241868][ T50] ? kthread_associate_blkcg+0x216/0x730 [ 48.247526][ T50] loop_process_work+0x92f/0x1db0 [ 48.252770][ T50] ? debug_object_deactivate+0x264/0x300 [ 48.258421][ T50] ? css_put+0x2c0/0x2c0 [ 48.262701][ T50] ? lock_release+0x720/0x720 [ 48.267389][ T50] ? lock_downgrade+0x6e0/0x6e0 [ 48.272329][ T50] process_one_work+0x996/0x1610 [ 48.277280][ T50] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 48.282694][ T50] ? rwlock_bug.part.0+0x90/0x90 [ 48.287644][ T50] ? _raw_spin_lock_irq+0x41/0x50 [ 48.292737][ T50] worker_thread+0x665/0x1080 [ 48.297426][ T50] ? process_one_work+0x1610/0x1610 [ 48.302670][ T50] kthread+0x2e9/0x3a0 [ 48.306752][ T50] ? kthread_complete_and_exit+0x40/0x40 [ 48.312462][ T50] ret_from_fork+0x1f/0x30 [ 48.316904][ T50] [ 48.319908][ T50] Kernel panic - not syncing: panic_on_warn set ... [ 48.326469][ T50] CPU: 1 PID: 50 Comm: kworker/u4:2 Not tainted 5.17.0-rc2-next-20220204-syzkaller #0 [ 48.335999][ T50] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.346033][ T50] Workqueue: loop0 loop_rootcg_workfn [ 48.351397][ T50] Call Trace: [ 48.354664][ T50] [ 48.357583][ T50] dump_stack_lvl+0xcd/0x134 [ 48.362166][ T50] panic+0x2b0/0x605 [ 48.366048][ T50] ? __warn_printk+0xf3/0xf3 [ 48.370627][ T50] ? __warn.cold+0x1d1/0x2cf [ 48.375204][ T50] ? iomap_iter+0xd85/0x1110 [ 48.379791][ T50] __warn.cold+0x1ec/0x2cf [ 48.384207][ T50] ? iomap_iter+0xd85/0x1110 [ 48.388794][ T50] report_bug+0x1bd/0x210 [ 48.393123][ T50] handle_bug+0x3c/0x60 [ 48.397284][ T50] exc_invalid_op+0x14/0x40 [ 48.401788][ T50] asm_exc_invalid_op+0x12/0x20 [ 48.406634][ T50] RIP: 0010:iomap_iter+0xd85/0x1110 [ 48.411826][ T50] Code: fd ff ff e8 ed 53 cf ff e9 f9 f9 ff ff e8 33 df 83 ff 0f 0b e9 87 f8 ff ff e8 27 df 83 ff 0f 0b e9 98 f7 ff ff e8 1b df 83 ff <0f> 0b e9 38 f7 ff ff e8 0f df 83 ff 0f 0b e9 64 f7 ff ff e8 03 df [ 48.431425][ T50] RSP: 0018:ffffc900012ff678 EFLAGS: 00010293 [ 48.437483][ T50] RAX: 0000000000000000 RBX: ffffc900012ff810 RCX: 0000000000000000 [ 48.445440][ T50] RDX: ffff888012bd9d40 RSI: ffffffff81f4c9d5 RDI: 0000000000000003 [ 48.453400][ T50] RBP: 00000fff80000000 R08: 00000fff80000000 R09: 000000000000000c [ 48.461358][ T50] R10: ffffffff81f4c10b R11: 000000000000003f R12: 0000000000000000 [ 48.469316][ T50] R13: ffffffff80000000 R14: ffffc900012ff838 R15: ffffc900012ff880 [ 48.477284][ T50] ? iomap_iter+0x4bb/0x1110 [ 48.481870][ T50] ? iomap_iter+0xd85/0x1110 [ 48.486455][ T50] ? iomap_iter+0xd85/0x1110 [ 48.491039][ T50] __iomap_dio_rw+0x6b2/0x1ae0 [ 48.495808][ T50] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 48.501789][ T50] ? iomap_dio_bio_iter+0x14b0/0x14b0 [ 48.507180][ T50] ? down_read+0x198/0x440 [ 48.511599][ T50] ? rwsem_down_read_slowpath+0xa70/0xa70 [ 48.517326][ T50] iomap_dio_rw+0x38/0x90 [ 48.521651][ T50] ext4_file_read_iter+0x41c/0x5d0 [ 48.526769][ T50] lo_rw_aio.isra.0+0xa99/0xc90 [ 48.531626][ T50] ? loop_validate_file+0x450/0x450 [ 48.536825][ T50] ? rwlock_bug.part.0+0x90/0x90 [ 48.541765][ T50] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 48.548010][ T50] ? kthread_associate_blkcg+0x216/0x730 [ 48.553648][ T50] loop_process_work+0x92f/0x1db0 [ 48.558676][ T50] ? debug_object_deactivate+0x264/0x300 [ 48.564316][ T50] ? css_put+0x2c0/0x2c0 [ 48.568559][ T50] ? lock_release+0x720/0x720 [ 48.573234][ T50] ? lock_downgrade+0x6e0/0x6e0 [ 48.578101][ T50] process_one_work+0x996/0x1610 [ 48.583044][ T50] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 48.588412][ T50] ? rwlock_bug.part.0+0x90/0x90 [ 48.593350][ T50] ? _raw_spin_lock_irq+0x41/0x50 [ 48.598387][ T50] worker_thread+0x665/0x1080 [ 48.603064][ T50] ? process_one_work+0x1610/0x1610 [ 48.608258][ T50] kthread+0x2e9/0x3a0 [ 48.612330][ T50] ? kthread_complete_and_exit+0x40/0x40 [ 48.617966][ T50] ret_from_fork+0x1f/0x30 [ 48.622398][ T50] [ 48.625735][ T50] Kernel Offset: disabled [ 48.630124][ T50] Rebooting in 86400 seconds..