RAX: ffffffff82245601 RBX: 0000000000001000 RCX: ffff888035e54b00 [ 527.726254][T10106] RDX: 0000000000000000 RSI: 00007fe664e01000 RDI: 00007fe664e02000 [ 527.726262][T10106] RBP: ffffc90002877c01 R08: ffff888035e54b00 R09: 0000000000000002 [ 527.726271][T10106] R10: 0000000000000001 R11: 0000000000000000 R12: 00007ffffffff000 [ 527.726278][T10106] R13: 00007fe664e01000 R14: 00007fe664e01000 R15: 00007fe664e02000 [ 527.726290][T10106] ? fault_in_readable+0x61/0x130 [ 527.726310][T10106] ? fault_in_readable+0x80/0x130 [ 527.726327][T10106] fault_in_iov_iter_readable+0x1c8/0x310 [ 527.726344][T10106] generic_perform_write+0x79b/0x8e0 [ 527.726369][T10106] ? __pfx_generic_perform_write+0x10/0x10 [ 527.726386][T10106] ? preempt_count_add+0x6a/0x140 [ 527.726399][T10106] ? mnt_put_write_access_file+0xbc/0x100 [ 527.726415][T10106] ? file_update_time_flags+0x3ab/0x440 [ 527.726433][T10106] shmem_file_write_iter+0xf8/0x120 [ 527.726451][T10106] vfs_write+0x612/0xba0 [ 527.726471][T10106] ? __pfx_vfs_write+0x10/0x10 [ 527.726486][T10106] ? __fget_files+0x3a2/0x420 [ 527.726503][T10106] ? __fget_files+0x2a/0x420 [ 527.726522][T10106] ? fdget+0x1ac/0x250 [ 527.726539][T10106] ksys_write+0x150/0x270 [ 527.726553][T10106] ? __pfx_ksys_write+0x10/0x10 [ 527.726574][T10106] do_syscall_64+0x166/0x520 [ 527.726589][T10106] ? trace_irq_disable+0x3b/0x140 [ 527.726606][T10106] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 527.726618][T10106] ? clear_bhb_loop+0x70/0xc0 [ 527.726634][T10106] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 527.726645][T10106] RIP: 0033:0x7fe66dd5ea0e [ 527.726656][T10106] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 527.726666][T10106] RSP: 002b:00007fe66ec6cda8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 527.726679][T10106] RAX: ffffffffffffffda RBX: 00007fe66ec6d6c0 RCX: 00007fe66dd5ea0e [ 527.726687][T10106] RDX: 0000000000008000 RSI: 00007fe664e00000 RDI: 0000000000000007 [ 527.726697][T10106] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 527.726704][T10106] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007 [ 527.726711][T10106] R13: 00007fe66ec6cee0 R14: 00007fe66ec6cea0 R15: 00007fe664e00000 [ 527.726733][T10106] [ 527.988786][T10106] memory: usage 96kB, limit 96kB, failcnt 16439 [ 527.988850][T10106] memory+swap: usage 120kB, limit 9007199254740988kB, failcnt 0 [ 527.988861][T10106] kmem: usage 84kB, limit 9007199254740988kB, failcnt 0 [ 527.988869][T10106] Memory cgroup stats for /syz2/test: [ 527.988956][T10106] cache 0 [ 527.988963][T10106] rss 0 [ 527.988967][T10106] rss_huge 0 [ 527.988972][T10106] shmem 0 [ 527.988976][T10106] mapped_file 0 [ 527.988981][T10106] dirty 0 [ 527.988985][T10106] writeback 0 [ 527.988990][T10106] workingset_refault_anon 4917 [ 527.988994][T10106] workingset_refault_file 0 [ 527.988999][T10106] swap 24576 [ 527.989002][T10106] swapcached 12288 [ 527.989007][T10106] pgpgin 8895 [ 527.989011][T10106] pgpgout 8892 [ 527.989016][T10106] pgfault 6553 [ 527.989020][T10106] pgmajfault 3003 [ 527.989025][T10106] inactive_anon 8192 [ 527.989030][T10106] active_anon 4096 [ 527.989034][T10106] inactive_file 0 [ 527.989038][T10106] active_file 0 [ 527.989042][T10106] unevictable 0 [ 527.989046][T10106] hierarchical_memory_limit 98304 [ 527.989051][T10106] hierarchical_memsw_limit 9223372036854771712 [ 527.989056][T10106] total_cache 0 [ 527.989061][T10106] total_rss 0 [ 527.989065][T10106] total_rss_huge 0 [ 527.989070][T10106] total_shmem 0 [ 527.989074][T10106] total_mapped_file 0 [ 527.989079][T10106] total_dirty 0 [ 527.989083][T10106] total_writeback 0 [ 527.989087][T10106] total_workingset_refault_anon 4917 [ 527.989092][T10106] total_workingset_refault_file 0 [ 527.989097][T10106] total_swap 24576 [ 527.989102][T10106] total_swapcached 12288 [ 527.989107][T10106] total_pgpgin 8895 [ 527.989112][T10106] total_pgpgout 8892 [ 527.989117][T10106] total_pgfault 6553 [ 527.989122][T10106] total_pgmajfault 3003 [ 527.989127][T10106] total_inactive_anon 8192 [ 527.989131][T10106] total_active_anon 4096 [ 527.989136][T10106] total_inactive_file 0 [ 527.989141][T10106] total_active_file 0 [ 527.989146][T10106] total_unevictable 0 [ 527.989151][T10106] anon_cost 0 [ 527.989156][T10106] file_cost 0 [ 527.989161][T10106] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz2/test,task_memcg=/syz2/test,task=syz.2.1807,pid=10105,uid=0 [ 527.989250][T10106] Memory cgroup out of memory: Killed process 10105 (syz.2.1807) total-vm:180308kB, anon-rss:1360kB, file-rss:1112kB, shmem-rss:0kB, UID:0 pgtables:84kB oom_score_adj:1000 [ 528.005527][T10120] syz.4.1813 invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=1000 [ 528.005550][T10120] CPU: 0 UID: 0 PID: 10120 Comm: syz.4.1813 Not tainted syzkaller #0 PREEMPT(full) [ 528.005563][T10120] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 528.005569][T10120] Call Trace: [ 528.005573][T10120] [ 528.005578][T10120] dump_stack_lvl+0xe8/0x150 [ 528.005595][T10120] dump_header+0xd3/0x4b0 [ 528.005608][T10120] oom_kill_process+0x3ab/0x9e0 [ 528.005622][T10120] out_of_memory+0xfb1/0x13b0 [ 528.005635][T10120] ? try_charge_memcg+0xc16/0x15f0 [ 528.005660][T10120] ? __pfx_out_of_memory+0x10/0x10 [ 528.005671][T10120] ? do_raw_spin_unlock+0x4d/0x200 [ 528.005691][T10120] try_charge_memcg+0xccc/0x15f0 [ 528.005718][T10120] ? __pfx_try_charge_memcg+0x10/0x10 [ 528.005747][T10120] ? charge_memcg+0x47/0x310 [ 528.005762][T10120] charge_memcg+0x1dd/0x310 [ 528.005778][T10120] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 528.005793][T10120] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 528.005810][T10120] __swap_cache_alloc_folio+0x4de/0x990 [ 528.005835][T10120] swap_cache_read_folio+0x44/0x130 [ 528.005853][T10120] swap_cluster_readahead+0x392/0x640 [ 528.005874][T10120] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 528.005891][T10120] ? __queue_work+0x20a/0x1360 [ 528.005925][T10120] swapin_readahead+0x1a3/0xc60 [ 528.005938][T10120] ? __lock_acquire+0x747/0x2de0 [ 528.005951][T10120] ? __pfx_swapin_readahead+0x10/0x10 [ 528.005965][T10120] ? swap_table_get+0x1e/0x260 [ 528.005975][T10120] ? swap_table_get+0x1e/0x260 [ 528.005984][T10120] ? swap_table_get+0x1e/0x260 [ 528.005994][T10120] ? swap_table_get+0x216/0x260 [ 528.006005][T10120] ? swap_cache_get_folio+0x2e7/0x2f0 [ 528.006018][T10120] do_swap_page+0x7bc/0x4db0 [ 528.006045][T10120] ? do_swap_page+0x120/0x4db0 [ 528.006060][T10120] ? __pfx_do_swap_page+0x10/0x10 [ 528.006074][T10120] ? __pte_offset_map+0x1ae/0x240 [ 528.006092][T10120] ? pte_offset_map_rw_nolock+0xea/0x160 [ 528.006111][T10120] handle_mm_fault+0x1398/0x3750 [ 528.006135][T10120] ? handle_mm_fault+0xf1/0x3750 [ 528.006158][T10120] ? __pfx_handle_mm_fault+0x10/0x10 [ 528.006189][T10120] ? lock_mm_and_find_vma+0xa7/0x340 [ 528.006238][T10120] do_user_addr_fault+0x7f6/0x1480 [ 528.006266][T10120] exc_page_fault+0x6a/0xc0 [ 528.006284][T10120] asm_exc_page_fault+0x26/0x30 [ 528.006297][T10120] RIP: 0010:fault_in_readable+0x8e/0x130 [ 528.006312][T10120] Code: a9 00 00 00 0f 01 cb 0f ae e8 4d 85 f6 40 0f 95 c5 4c 89 ff 4c 89 f6 e8 60 ca a4 ff 4d 39 f7 0f 97 c0 40 84 c5 74 43 4d 89 f5 <41> 8a 45 00 88 44 24 07 49 81 e5 00 f0 ff ff 4d 8d a5 00 10 00 00 [ 528.006323][T10120] RSP: 0018:ffffc90003b6faa8 EFLAGS: 00050202 [ 528.006335][T10120] RAX: ffffffff82245601 RBX: 0000000000001000 RCX: ffff888036c02580 [ 528.006344][T10120] RDX: 0000000000000000 RSI: 00007f5d8cc00000 RDI: 00007f5d8cc01000 [ 528.006352][T10120] RBP: ffffc90003b6fc01 R08: ffff888036c02580 R09: 0000000000000002 [ 528.006361][T10120] R10: 0000000000000001 R11: 0000000000000000 R12: 00007ffffffff000 [ 528.006368][T10120] R13: 00007f5d8cc00000 R14: 00007f5d8cc00000 R15: 00007f5d8cc01000 [ 528.006382][T10120] ? fault_in_readable+0x61/0x130 [ 528.006402][T10120] ? fault_in_readable+0x80/0x130 [ 528.006417][T10120] fault_in_iov_iter_readable+0x1c8/0x310 [ 528.006435][T10120] generic_perform_write+0x79b/0x8e0 [ 528.006459][T10120] ? __pfx_generic_perform_write+0x10/0x10 [ 528.006475][T10120] ? preempt_count_add+0x6a/0x140 [ 528.006488][T10120] ? mnt_put_write_access_file+0xbc/0x100 [ 528.006505][T10120] ? file_update_time_flags+0x3ab/0x440 [ 528.006522][T10120] shmem_file_write_iter+0xf8/0x120 [ 528.006537][T10120] vfs_write+0x612/0xba0 [ 528.006550][T10120] ? __pfx_vfs_write+0x10/0x10 [ 528.006559][T10120] ? __fget_files+0x3a2/0x420 [ 528.006570][T10120] ? __fget_files+0x2a/0x420 [ 528.006588][T10120] ? fdget+0x1ac/0x250 [ 528.006603][T10120] ksys_write+0x150/0x270 [ 528.006618][T10120] ? __pfx_ksys_write+0x10/0x10 [ 528.006638][T10120] do_syscall_64+0x166/0x520 [ 528.006654][T10120] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 528.006666][T10120] ? clear_bhb_loop+0x70/0xc0 [ 528.006677][T10120] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 528.006685][T10120] RIP: 0033:0x7f5d95b5ea0e [ 528.006695][T10120] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 528.006702][T10120] RSP: 002b:00007f5d96a60da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 528.006714][T10120] RAX: ffffffffffffffda RBX: 00007f5d96a616c0 RCX: 00007f5d95b5ea0e [ 528.006722][T10120] RDX: 0000000000008000 RSI: 00007f5d8cc00000 RDI: 0000000000000007 [ 528.006730][T10120] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 528.006737][T10120] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007 [ 528.006745][T10120] R13: 00007f5d96a60ee0 R14: 00007f5d96a60ea0 R15: 00007f5d8cc00000 [ 528.006767][T10120] [ 528.334432][T10120] memory: usage 96kB, limit 96kB, failcnt 14874 [ 528.334447][T10120] memory+swap: usage 108kB, limit 9007199254740988kB, failcnt 0 [ 528.334457][T10120] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 528.334464][T10120] Memory cgroup stats for /syz4/test: [ 528.334549][T10120] cache 0 [ 528.334555][T10120] rss 0 [ 528.334559][T10120] rss_huge 0 [ 528.334564][T10120] shmem 0 [ 528.334568][T10120] mapped_file 0 [ 528.334573][T10120] dirty 0 [ 528.334578][T10120] writeback 0 [ 528.334582][T10120] workingset_refault_anon 3783 [ 528.334587][T10120] workingset_refault_file 0 [ 528.334592][T10120] swap 12288 [ 528.334596][T10120] swapcached 16384 [ 528.334601][T10120] pgpgin 8215 [ 528.334605][T10120] pgpgout 8211 [ 528.334610][T10120] pgfault 6229 [ 528.334614][T10120] pgmajfault 2340 [ 528.334618][T10120] inactive_anon 8192 [ 528.334623][T10120] active_anon 8192 [ 528.334628][T10120] inactive_file 0 [ 528.334632][T10120] active_file 0 [ 528.334636][T10120] unevictable 0 [ 528.334641][T10120] hierarchical_memory_limit 98304 [ 528.334646][T10120] hierarchical_memsw_limit 9223372036854771712 [ 528.334652][T10120] total_cache 0 [ 528.334656][T10120] total_rss 0 [ 528.334660][T10120] total_rss_huge 0 [ 528.334665][T10120] total_shmem 0 [ 528.334669][T10120] total_mapped_file 0 [ 528.334673][T10120] total_dirty 0 [ 528.334678][T10120] total_writeback 0 [ 528.334682][T10120] total_workingset_refault_anon 3783 [ 528.334687][T10120] total_workingset_refault_file 0 [ 528.334692][T10120] total_swap 12288 [ 528.334697][T10120] total_swapcached 16384 [ 528.334701][T10120] total_pgpgin 8215 [ 528.334705][T10120] total_pgpgout 8211 [ 528.334709][T10120] total_pgfault 6229 [ 528.334714][T10120] total_pgmajfault 2340 [ 528.334718][T10120] total_inactive_anon 8192 [ 528.334723][T10120] total_active_anon 8192 [ 528.334728][T10120] total_inactive_file 0 [ 528.334732][T10120] total_active_file 0 [ 528.334736][T10120] total_unevictable 0 [ 528.334747][T10120] anon_cost 0 [ 528.334751][T10120] file_cost 0 [ 528.334756][T10120] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz4/test,task_memcg=/syz4/test,task=syz.4.1813,pid=10118,uid=0 [ 528.334842][T10120] Memory cgroup out of memory: Killed process 10118 (syz.4.1813) total-vm:180308kB, anon-rss:1360kB, file-rss:1112kB, shmem-rss:0kB, UID:0 pgtables:88kB oom_score_adj:1000 [ 528.522546][ T78] kworker/u4:5 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 528.522573][ T78] CPU: 0 UID: 0 PID: 78 Comm: kworker/u4:5 Not tainted syzkaller #0 PREEMPT(full) [ 528.522587][ T78] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 528.522595][ T78] Workqueue: loop0 loop_rootcg_workfn [ 528.522617][ T78] Call Trace: [ 528.522623][ T78] [ 528.522629][ T78] dump_stack_lvl+0xe8/0x150 [ 528.522649][ T78] dump_header+0xd3/0x4b0 [ 528.522668][ T78] oom_kill_process+0x3ab/0x9e0 [ 528.522687][ T78] out_of_memory+0xfb1/0x13b0 [ 528.522700][ T78] ? try_charge_memcg+0xc16/0x15f0 [ 528.522720][ T78] ? __pfx_out_of_memory+0x10/0x10 [ 528.522728][ T78] ? do_raw_spin_unlock+0x4d/0x200 [ 528.522741][ T78] try_charge_memcg+0xccc/0x15f0 [ 528.522765][ T78] ? __pfx_try_charge_memcg+0x10/0x10 [ 528.522794][ T78] ? charge_memcg+0x47/0x310 [ 528.522833][ T78] charge_memcg+0x1dd/0x310 [ 528.522873][ T78] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 528.522890][ T78] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 528.522907][ T78] __swap_cache_alloc_folio+0x4de/0x990 [ 528.522935][ T78] swap_cluster_readahead+0x4f2/0x640 [ 528.522957][ T78] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 528.522977][ T78] ? swap_table_get+0x1e/0x260 [ 528.522998][ T78] ? swap_cache_get_folio+0x2e7/0x2f0 [ 528.523016][ T78] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 528.523034][ T78] shmem_swapin_folio+0xe76/0x1f80 [ 528.523059][ T78] ? filemap_get_entry+0xcd/0x3f0 [ 528.523078][ T78] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 528.523100][ T78] ? lock_acquire+0x115/0x350 [ 528.523117][ T78] shmem_get_folio_gfp+0x37e/0x1330 [ 528.523138][ T78] shmem_file_read_iter+0x1b7/0x890 [ 528.523155][ T78] lo_rw_aio+0xc6d/0xf20 [ 528.523173][ T78] ? __pfx_lo_rw_aio+0x10/0x10 [ 528.523182][ T78] ? do_raw_spin_lock+0x12b/0x2f0 [ 528.523193][ T78] ? kthread_associate_blkcg+0x389/0x660 [ 528.523203][ T78] ? _raw_spin_unlock_irq+0x23/0x50 [ 528.523216][ T78] loop_process_work+0x960/0x11c0 [ 528.523234][ T78] ? __pfx_loop_process_work+0x10/0x10 [ 528.523248][ T78] ? look_up_lock_class+0x57/0x110 [ 528.523264][ T78] ? register_lock_class+0x31/0x2e0 [ 528.523288][ T78] ? __lock_acquire+0x747/0x2de0 [ 528.523306][ T78] ? trace_hrtimer_start+0x82/0x200 [ 528.523331][ T78] ? do_raw_spin_lock+0x12b/0x2f0 [ 528.523350][ T78] ? lock_acquire+0x115/0x350 [ 528.523367][ T78] ? rcu_is_watching+0x16/0xb0 [ 528.523380][ T78] ? process_scheduled_works+0x97a/0x1630 [ 528.523392][ T78] process_scheduled_works+0xc3d/0x1630 [ 528.523415][ T78] ? __pfx_process_scheduled_works+0x10/0x10 [ 528.523428][ T78] ? assign_work+0x3cf/0x5d0 [ 528.523441][ T78] worker_thread+0xa47/0xfb0 [ 528.523458][ T78] ? __kthread_parkme+0x71/0x1f0 [ 528.523470][ T78] kthread+0x38b/0x480 [ 528.523483][ T78] ? __pfx_worker_thread+0x10/0x10 [ 528.523494][ T78] ? __pfx_kthread+0x10/0x10 [ 528.523503][ T78] ret_from_fork+0x514/0xb70 [ 528.523514][ T78] ? __pfx_ret_from_fork+0x10/0x10 [ 528.523523][ T78] ? __switch_to+0xc78/0x1410 [ 528.523543][ T78] ? __pfx_kthread+0x10/0x10 [ 528.523557][ T78] ret_from_fork_asm+0x1a/0x30 [ 528.523582][ T78] [ 528.582058][ T78] memory: usage 96kB, limit 96kB, failcnt 49911 [ 528.582073][ T78] memory+swap: usage 120kB, limit 9007199254740988kB, failcnt 0 [ 528.582082][ T78] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 528.582089][ T78] Memory cgroup stats for /syz0/test: [ 528.582176][ T78] cache 16384 [ 528.582182][ T78] rss 0 [ 528.582186][ T78] rss_huge 0 [ 528.582190][ T78] shmem 8192 [ 528.582194][ T78] mapped_file 0 [ 528.582199][ T78] dirty 0 [ 528.582204][ T78] writeback 0 [ 528.582208][ T78] workingset_refault_anon 1436 [ 528.582213][ T78] workingset_refault_file 7 [ 528.582218][ T78] swap 24576 [ 528.582222][ T78] swapcached 0 [ 528.582226][ T78] pgpgin 2513 [ 528.582230][ T78] pgpgout 2509 [ 528.582234][ T78] pgfault 1657 [ 528.582239][ T78] pgmajfault 635 [ 528.582244][ T78] inactive_anon 8192 [ 528.582248][ T78] active_anon 0 [ 528.582253][ T78] inactive_file 4096 [ 528.582257][ T78] active_file 4096 [ 528.582262][ T78] unevictable 0 [ 528.582266][ T78] hierarchical_memory_limit 98304 [ 528.582278][ T78] hierarchical_memsw_limit 9223372036854771712 [ 528.582283][ T78] total_cache 16384 [ 528.582288][ T78] total_rss 0 [ 528.582292][ T78] total_rss_huge 0 [ 528.582297][ T78] total_shmem 8192 [ 528.582301][ T78] total_mapped_file 0 [ 528.582306][ T78] total_dirty 0 [ 528.582310][ T78] total_writeback 0 [ 528.582315][ T78] total_workingset_refault_anon 1436 [ 528.582320][ T78] total_workingset_refault_file 7 [ 528.582325][ T78] total_swap 24576 [ 528.582330][ T78] total_swapcached 0 [ 528.582334][ T78] total_pgpgin 2513 [ 528.582338][ T78] total_pgpgout 2509 [ 528.582343][ T78] total_pgfault 1657 [ 528.582347][ T78] total_pgmajfault 635 [ 528.582352][ T78] total_inactive_anon 8192 [ 528.582356][ T78] total_active_anon 0 [ 528.582361][ T78] total_inactive_file 4096 [ 528.582366][ T78] total_active_file 4096 [ 528.582370][ T78] total_unevictable 0 [ 528.582374][ T78] anon_cost 0 [ 528.582377][ T78] file_cost 0 [ 528.582382][ T78] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz0/test,task_memcg=/syz0/test,task=syz.0.1812,pid=10116,uid=0 [ 528.582465][ T78] Memory cgroup out of memory: Killed process 10116 (syz.0.1812) total-vm:45140kB, anon-rss:1360kB, file-rss:1300kB, shmem-rss:0kB, UID:0 pgtables:80kB oom_score_adj:1000 [ 528.829576][T10122] syz.3.1815 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=1000 [ 528.829604][T10122] CPU: 0 UID: 0 PID: 10122 Comm: syz.3.1815 Not tainted syzkaller #0 PREEMPT(full) [ 528.829637][T10122] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 528.829648][T10122] Call Trace: [ 528.829654][T10122] [ 528.829660][T10122] dump_stack_lvl+0xe8/0x150 [ 528.829686][T10122] dump_header+0xd3/0x4b0 [ 528.829721][T10122] oom_kill_process+0x3ab/0x9e0 [ 528.829742][T10122] out_of_memory+0xfb1/0x13b0 [ 528.829755][T10122] ? try_charge_memcg+0xc16/0x15f0 [ 528.829779][T10122] ? __pfx_out_of_memory+0x10/0x10 [ 528.829792][T10122] ? do_raw_spin_unlock+0x4d/0x200 [ 528.829813][T10122] try_charge_memcg+0xccc/0x15f0 [ 528.829840][T10122] ? __pfx_try_charge_memcg+0x10/0x10 [ 528.829861][T10122] ? percpu_ref_tryget+0x15/0x180 [ 528.829886][T10122] ? __memcg_kmem_charge_page+0x158/0x530 [ 528.829903][T10122] __memcg_kmem_charge_page+0x32f/0x530 [ 528.829916][T10122] ? __memcg_kmem_charge_page+0x158/0x530 [ 528.829933][T10122] memcg_charge_kernel_stack+0x1c4/0x4c0 [ 528.829950][T10122] dup_task_struct+0x2e1/0xa00 [ 528.829973][T10122] copy_process+0x7ea/0x44b0 [ 528.829989][T10122] ? lock_acquire+0x115/0x350 [ 528.830006][T10122] ? page_table_check_set+0x1a4/0x590 [ 528.830031][T10122] ? lock_acquire+0x115/0x350 [ 528.830054][T10122] ? __pfx_copy_process+0x10/0x10 [ 528.830080][T10122] kernel_clone+0x2d7/0x940 [ 528.830102][T10122] ? __pfx_kernel_clone+0x10/0x10 [ 528.830134][T10122] __se_sys_clone3+0x33c/0x360 [ 528.830155][T10122] ? __pfx___se_sys_clone3+0x10/0x10 [ 528.830184][T10122] ? _copy_to_user+0x8a/0xb0 [ 528.830211][T10122] ? do_user_addr_fault+0xd3f/0x1480 [ 528.830237][T10122] do_syscall_64+0x166/0x520 [ 528.830255][T10122] ? trace_irq_disable+0x3b/0x140 [ 528.830278][T10122] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 528.830293][T10122] ? clear_bhb_loop+0x70/0xc0 [ 528.830311][T10122] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 528.830323][T10122] RIP: 0033:0x7fdbe5f9efc9 [ 528.830337][T10122] Code: 90 b8 01 00 00 00 b9 01 00 00 00 eb ec 0f 1f 40 00 b8 ea ff ff ff 48 85 ff 74 28 48 85 d2 74 23 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 14 74 01 c3 31 ed 4c 89 c7 ff d2 48 89 c7 b8 3c 00 00 [ 528.830349][T10122] RSP: 002b:00007ffdbc9d1038 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3 [ 528.830363][T10122] RAX: ffffffffffffffda RBX: 00007fdbe5f5a560 RCX: 00007fdbe5f9efc9 [ 528.830373][T10122] RDX: 00007fdbe5f5a560 RSI: 0000000000000058 RDI: 00007ffdbc9d1090 [ 528.830382][T10122] RBP: 00007fdbe6f316c0 R08: 00007fdbe6f316c0 R09: 00007ffdbc9d1177 [ 528.830391][T10122] R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffe8 [ 528.830399][T10122] R13: 000000000000006e R14: 00007ffdbc9d1090 R15: 00007ffdbc9d1178 [ 528.830419][T10122] [ 528.947519][T10122] memory: usage 96kB, limit 96kB, failcnt 14736 [ 528.947536][T10122] memory+swap: usage 100kB, limit 9007199254740988kB, failcnt 0 [ 528.947545][T10122] kmem: usage 96kB, limit 9007199254740988kB, failcnt 0 [ 528.947553][T10122] Memory cgroup stats for /syz3/test: [ 528.947639][T10122] cache 0 [ 528.947645][T10122] rss 0 [ 528.947649][T10122] rss_huge 0 [ 528.947654][T10122] shmem 0 [ 528.947657][T10122] mapped_file 0 [ 528.947662][T10122] dirty 0 [ 528.947666][T10122] writeback 0 [ 528.947670][T10122] workingset_refault_anon 3882 [ 528.947675][T10122] workingset_refault_file 0 [ 528.947681][T10122] swap 4096 [ 528.947686][T10122] swapcached 0 [ 528.947690][T10122] pgpgin 8365 [ 528.947694][T10122] pgpgout 8365 [ 528.947699][T10122] pgfault 6301 [ 528.947703][T10122] pgmajfault 2382 [ 528.947708][T10122] inactive_anon 0 [ 528.947712][T10122] active_anon 0 [ 528.947716][T10122] inactive_file 0 [ 528.947720][T10122] active_file 0 [ 528.947724][T10122] unevictable 0 [ 528.947728][T10122] hierarchical_memory_limit 98304 [ 528.947733][T10122] hierarchical_memsw_limit 9223372036854771712 [ 528.947738][T10122] total_cache 0 [ 528.947743][T10122] total_rss 0 [ 528.947747][T10122] total_rss_huge 0 [ 528.947752][T10122] total_shmem 0 [ 528.947756][T10122] total_mapped_file 0 [ 528.947761][T10122] total_dirty 0 [ 528.947764][T10122] total_writeback 0 [ 528.947768][T10122] total_workingset_refault_anon 3882 [ 528.947773][T10122] total_workingset_refault_file 0 [ 528.947778][T10122] total_swap 4096 [ 528.947782][T10122] total_swapcached 0 [ 528.947787][T10122] total_pgpgin 8365 [ 528.947792][T10122] total_pgpgout 8365 [ 528.947797][T10122] total_pgfault 6301 [ 528.947801][T10122] total_pgmajfault 2382 [ 528.947806][T10122] total_inactive_anon 0 [ 528.947811][T10122] total_active_anon 0 [ 528.947815][T10122] total_inactive_file 0 [ 528.947820][T10122] total_active_file 0 [ 528.947824][T10122] total_unevictable 0 [ 528.947828][T10122] anon_cost 0 [ 528.947832][T10122] file_cost 0 [ 528.947835][T10122] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz3/test,task_memcg=/syz3/test,task=syz.3.1815,pid=10122,uid=0 [ 528.947913][T10122] Memory cgroup out of memory: Killed process 10122 (syz.3.1815) total-vm:45272kB, anon-rss:1360kB, file-rss:1112kB, shmem-rss:0kB, UID:0 pgtables:80kB oom_score_adj:1000 2026/10/27 07:52:09 executed programs: 1822 [ 530.665366][ T27] oom_reaper: reaped process 10116 (syz.0.1812), now anon-rss:0kB, file-rss:72kB, shmem-rss:0kB [ 530.747046][ T12] kworker/u4:0 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 530.747078][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u4:0 Not tainted syzkaller #0 PREEMPT(full) [ 530.747093][ T12] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 530.747101][ T12] Workqueue: loop0 loop_workfn [ 530.747124][ T12] Call Trace: [ 530.747130][ T12] [ 530.747136][ T12] dump_stack_lvl+0xe8/0x150 [ 530.747157][ T12] dump_header+0xd3/0x4b0 [ 530.747176][ T12] out_of_memory+0x1021/0x13b0 [ 530.747190][ T12] ? try_charge_memcg+0xc16/0x15f0 [ 530.747224][ T12] ? __pfx_out_of_memory+0x10/0x10 [ 530.747237][ T12] ? do_raw_spin_unlock+0x4d/0x200 [ 530.747258][ T12] try_charge_memcg+0xccc/0x15f0 [ 530.747285][ T12] ? __pfx_try_charge_memcg+0x10/0x10 [ 530.747313][ T12] ? charge_memcg+0x47/0x310 [ 530.747332][ T12] charge_memcg+0x1dd/0x310 [ 530.747348][ T12] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 530.747363][ T12] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 530.747382][ T12] __swap_cache_alloc_folio+0x4de/0x990 [ 530.747410][ T12] swap_cluster_readahead+0x4f2/0x640 [ 530.747433][ T12] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 530.747455][ T12] ? swap_table_get+0x1e/0x260 [ 530.747476][ T12] ? swap_cache_get_folio+0x2e7/0x2f0 [ 530.747495][ T12] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 530.747514][ T12] shmem_swapin_folio+0xe76/0x1f80 [ 530.747538][ T12] ? filemap_get_entry+0xcd/0x3f0 [ 530.747558][ T12] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 530.747608][ T12] ? lock_acquire+0x115/0x350 [ 530.747627][ T12] shmem_get_folio_gfp+0x37e/0x1330 [ 530.747653][ T12] shmem_file_read_iter+0x1b7/0x890 [ 530.747678][ T12] lo_rw_aio+0xc6d/0xf20 [ 530.747699][ T12] ? lock_acquire+0x115/0x350 [ 530.747717][ T12] ? __pfx_lo_rw_aio+0x10/0x10 [ 530.747738][ T12] ? kthread_associate_blkcg+0x4c0/0x660 [ 530.747752][ T12] ? _raw_spin_unlock_irq+0x23/0x50 [ 530.747772][ T12] loop_process_work+0x960/0x11c0 [ 530.747800][ T12] ? __pfx_loop_process_work+0x10/0x10 [ 530.747817][ T12] ? look_up_lock_class+0x57/0x110 [ 530.747835][ T12] ? register_lock_class+0x31/0x2e0 [ 530.747855][ T12] ? __lock_acquire+0x747/0x2de0 [ 530.747875][ T12] ? trace_hrtimer_start+0x82/0x200 [ 530.747895][ T12] ? do_raw_spin_lock+0x12b/0x2f0 [ 530.747913][ T12] ? lock_acquire+0x115/0x350 [ 530.747934][ T12] ? rcu_is_watching+0x16/0xb0 [ 530.747955][ T12] ? process_scheduled_works+0x97a/0x1630 [ 530.747976][ T12] process_scheduled_works+0xc3d/0x1630 [ 530.748014][ T12] ? __pfx_process_scheduled_works+0x10/0x10 [ 530.748036][ T12] ? assign_work+0x3cf/0x5d0 [ 530.748057][ T12] worker_thread+0xa47/0xfb0 [ 530.748093][ T12] kthread+0x38b/0x480 [ 530.748109][ T12] ? __pfx_worker_thread+0x10/0x10 [ 530.748125][ T12] ? __pfx_kthread+0x10/0x10 [ 530.748141][ T12] ret_from_fork+0x514/0xb70 [ 530.748159][ T12] ? __pfx_ret_from_fork+0x10/0x10 [ 530.748173][ T12] ? __switch_to+0xc78/0x1410 [ 530.748194][ T12] ? __pfx_kthread+0x10/0x10 [ 530.748208][ T12] ret_from_fork_asm+0x1a/0x30 [ 530.748238][ T12] [ 530.864688][ T12] memory: usage 100kB, limit 96kB, failcnt 50681 [ 530.864699][ T12] memory+swap: usage 124kB, limit 9007199254740988kB, failcnt 0 [ 530.864705][ T12] kmem: usage 84kB, limit 9007199254740988kB, failcnt 0 [ 530.864711][ T12] Memory cgroup stats for /syz0/test: [ 530.864792][ T12] cache 16384 [ 530.864796][ T12] rss 0 [ 530.864799][ T12] rss_huge 0 [ 530.864802][ T12] shmem 8192 [ 530.864805][ T12] mapped_file 0 [ 530.864807][ T12] dirty 0 [ 530.864810][ T12] writeback 0 [ 530.864813][ T12] workingset_refault_anon 1436 [ 530.864816][ T12] workingset_refault_file 7 [ 530.864819][ T12] swap 24576 [ 530.864822][ T12] swapcached 0 [ 530.864825][ T12] pgpgin 2513 [ 530.864827][ T12] pgpgout 2509 [ 530.864830][ T12] pgfault 1657 [ 530.864833][ T12] pgmajfault 635 [ 530.864836][ T12] inactive_anon 8192 [ 530.864838][ T12] active_anon 0 [ 530.864841][ T12] inactive_file 0 [ 530.864844][ T12] active_file 8192 [ 530.864847][ T12] unevictable 0 [ 530.864850][ T12] hierarchical_memory_limit 98304 [ 530.864853][ T12] hierarchical_memsw_limit 9223372036854771712 [ 530.864856][ T12] total_cache 16384 [ 530.864859][ T12] total_rss 0 [ 530.864862][ T12] total_rss_huge 0 [ 530.864865][ T12] total_shmem 8192 [ 530.864868][ T12] total_mapped_file 0 [ 530.864871][ T12] total_dirty 0 [ 530.864873][ T12] total_writeback 0 [ 530.864876][ T12] total_workingset_refault_anon 1436 [ 530.864879][ T12] total_workingset_refault_file 7 [ 530.864882][ T12] total_swap 24576 [ 530.864885][ T12] total_swapcached 0 [ 530.864887][ T12] total_pgpgin 2513 [ 530.864890][ T12] total_pgpgout 2509 [ 530.864893][ T12] total_pgfault 1657 [ 530.864896][ T12] total_pgmajfault 635 [ 530.864898][ T12] total_inactive_anon 8192 [ 530.864901][ T12] total_active_anon 0 [ 530.864904][ T12] total_inactive_file 0 [ 530.864907][ T12] total_active_file 8192 [ 530.864910][ T12] total_unevictable 0 [ 530.864913][ T12] anon_cost 0 [ 530.864915][ T12] file_cost 0 [ 530.864918][ T12] Out of memory and no killable processes... [ 530.864986][ T12] kernel resource error, dev loop0, sector 8 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 530.891066][ T78] kworker/u4:5 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 530.891092][ T78] CPU: 0 UID: 0 PID: 78 Comm: kworker/u4:5 Not tainted syzkaller #0 PREEMPT(full) [ 530.891106][ T78] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 530.891114][ T78] Workqueue: loop0 loop_rootcg_workfn [ 530.891138][ T78] Call Trace: [ 530.891143][ T78] [ 530.891149][ T78] dump_stack_lvl+0xe8/0x150 [ 530.891172][ T78] dump_header+0xd3/0x4b0 [ 530.891192][ T78] out_of_memory+0x1021/0x13b0 [ 530.891206][ T78] ? try_charge_memcg+0xc16/0x15f0 [ 530.891231][ T78] ? __pfx_out_of_memory+0x10/0x10 [ 530.891243][ T78] ? do_raw_spin_unlock+0x4d/0x200 [ 530.891262][ T78] try_charge_memcg+0xccc/0x15f0 [ 530.891288][ T78] ? __pfx_try_charge_memcg+0x10/0x10 [ 530.891315][ T78] ? charge_memcg+0x47/0x310 [ 530.891331][ T78] charge_memcg+0x1dd/0x310 [ 530.891347][ T78] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 530.891361][ T78] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 530.891378][ T78] __swap_cache_alloc_folio+0x4de/0x990 [ 530.891404][ T78] swap_cluster_readahead+0x4f2/0x640 [ 530.891426][ T78] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 530.891447][ T78] ? swap_table_get+0x1e/0x260 [ 530.891491][ T78] ? swap_cache_get_folio+0x2e7/0x2f0 [ 530.891503][ T78] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 530.891522][ T78] shmem_swapin_folio+0xe76/0x1f80 [ 530.891546][ T78] ? filemap_get_entry+0xcd/0x3f0 [ 530.891565][ T78] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 530.891585][ T78] ? lock_acquire+0x115/0x350 [ 530.891603][ T78] shmem_get_folio_gfp+0x37e/0x1330 [ 530.891627][ T78] shmem_file_read_iter+0x1b7/0x890 [ 530.891652][ T78] lo_rw_aio+0xc6d/0xf20 [ 530.891682][ T78] ? __pfx_lo_rw_aio+0x10/0x10 [ 530.891695][ T78] ? do_raw_spin_lock+0x12b/0x2f0 [ 530.891712][ T78] ? kthread_associate_blkcg+0x389/0x660 [ 530.891733][ T78] ? _raw_spin_unlock_irq+0x23/0x50 [ 530.891752][ T78] loop_process_work+0x960/0x11c0 [ 530.891781][ T78] ? __pfx_loop_process_work+0x10/0x10 [ 530.891796][ T78] ? look_up_lock_class+0x57/0x110 [ 530.891813][ T78] ? register_lock_class+0x31/0x2e0 [ 530.891830][ T78] ? __lock_acquire+0x747/0x2de0 [ 530.891848][ T78] ? trace_hrtimer_start+0x82/0x200 [ 530.891866][ T78] ? do_raw_spin_lock+0x12b/0x2f0 [ 530.891885][ T78] ? lock_acquire+0x115/0x350 [ 530.891905][ T78] ? rcu_is_watching+0x16/0xb0 [ 530.891923][ T78] ? process_scheduled_works+0x97a/0x1630 [ 530.891943][ T78] process_scheduled_works+0xc3d/0x1630 [ 530.891979][ T78] ? __pfx_process_scheduled_works+0x10/0x10 [ 530.892001][ T78] ? assign_work+0x3cf/0x5d0 [ 530.892021][ T78] worker_thread+0xa47/0xfb0 [ 530.892047][ T78] ? __kthread_parkme+0x71/0x1f0 [ 530.892066][ T78] kthread+0x38b/0x480 [ 530.892080][ T78] ? __pfx_worker_thread+0x10/0x10 [ 530.892096][ T78] ? __pfx_kthread+0x10/0x10 [ 530.892111][ T78] ret_from_fork+0x514/0xb70 [ 530.892128][ T78] ? __pfx_ret_from_fork+0x10/0x10 [ 530.892142][ T78] ? __switch_to+0xc78/0x1410 [ 530.892163][ T78] ? __pfx_kthread+0x10/0x10 [ 530.892177][ T78] ret_from_fork_asm+0x1a/0x30 [ 530.892201][ T78] [ 530.900952][T10117] Unable to read inode block [ 531.023223][ T78] memory: usage 100kB, limit 96kB, failcnt 50681 [ 531.023238][ T78] memory+swap: usage 124kB, limit 9007199254740988kB, failcnt 0 [ 531.023246][ T78] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 531.023254][ T78] Memory cgroup stats for /syz0/test: [ 531.023332][ T78] cache 16384 [ 531.023339][ T78] rss 0 [ 531.023344][ T78] rss_huge 0 [ 531.023349][ T78] shmem 8192 [ 531.023354][ T78] mapped_file 0 [ 531.023359][ T78] dirty 0 [ 531.023363][ T78] writeback 0 [ 531.023368][ T78] workingset_refault_anon 1436 [ 531.023374][ T78] workingset_refault_file 7 [ 531.023379][ T78] swap 24576 [ 531.023383][ T78] swapcached 0 [ 531.023388][ T78] pgpgin 2513 [ 531.023393][ T78] pgpgout 2509 [ 531.023397][ T78] pgfault 1657 [ 531.023402][ T78] pgmajfault 635 [ 531.023406][ T78] inactive_anon 8192 [ 531.023411][ T78] active_anon 0 [ 531.023416][ T78] inactive_file 0 [ 531.023421][ T78] active_file 8192 [ 531.023426][ T78] unevictable 0 [ 531.023431][ T78] hierarchical_memory_limit 98304 [ 531.023437][ T78] hierarchical_memsw_limit 9223372036854771712 [ 531.023443][ T78] total_cache 16384 [ 531.023447][ T78] total_rss 0 [ 531.023451][ T78] total_rss_huge 0 [ 531.023456][ T78] total_shmem 8192 [ 531.023461][ T78] total_mapped_file 0 [ 531.023466][ T78] total_dirty 0 [ 531.023471][ T78] total_writeback 0 [ 531.023475][ T78] total_workingset_refault_anon 1436 [ 531.023481][ T78] total_workingset_refault_file 7 [ 531.023486][ T78] total_swap 24576 [ 531.023491][ T78] total_swapcached 0 [ 531.023495][ T78] total_pgpgin 2513 [ 531.023500][ T78] total_pgpgout 2509 [ 531.023505][ T78] total_pgfault 1657 [ 531.023510][ T78] total_pgmajfault 635 [ 531.023514][ T78] total_inactive_anon 8192 [ 531.023519][ T78] total_active_anon 0 [ 531.023524][ T78] total_inactive_file 0 [ 531.023528][ T78] total_active_file 8192 [ 531.023533][ T78] total_unevictable 0 [ 531.023538][ T78] anon_cost 0 [ 531.023542][ T78] file_cost 0 [ 531.023547][ T78] Out of memory and no killable processes... [ 531.023604][ T78] kernel resource error, dev loop0, sector 24 op 0x0:(READ) flags 0x880700 phys_seg 1 prio class 2 [ 531.408698][ T182] kworker/u4:6 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 531.408728][ T182] CPU: 0 UID: 0 PID: 182 Comm: kworker/u4:6 Not tainted syzkaller #0 PREEMPT(full) [ 531.408743][ T182] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 531.408752][ T182] Workqueue: loop0 loop_rootcg_workfn [ 531.408777][ T182] Call Trace: [ 531.408782][ T182] [ 531.408788][ T182] dump_stack_lvl+0xe8/0x150 [ 531.408808][ T182] dump_header+0xd3/0x4b0 [ 531.408828][ T182] out_of_memory+0x1021/0x13b0 [ 531.408843][ T182] ? try_charge_memcg+0xc16/0x15f0 [ 531.408867][ T182] ? __pfx_out_of_memory+0x10/0x10 [ 531.408880][ T182] ? do_raw_spin_unlock+0x4d/0x200 [ 531.408898][ T182] try_charge_memcg+0xccc/0x15f0 [ 531.408926][ T182] ? __pfx_try_charge_memcg+0x10/0x10 [ 531.408955][ T182] ? charge_memcg+0x47/0x310 [ 531.408971][ T182] charge_memcg+0x1dd/0x310 [ 531.409011][ T182] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 531.409025][ T182] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 531.409041][ T182] __swap_cache_alloc_folio+0x4de/0x990 [ 531.409069][ T182] swap_cluster_readahead+0x4f2/0x640 [ 531.409092][ T182] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 531.409112][ T182] ? swap_table_get+0x1e/0x260 [ 531.409132][ T182] ? swap_cache_get_folio+0x2e7/0x2f0 [ 531.409149][ T182] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 531.409167][ T182] shmem_swapin_folio+0xe76/0x1f80 [ 531.409194][ T182] ? filemap_get_entry+0xcd/0x3f0 [ 531.409213][ T182] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 531.409230][ T182] ? lock_acquire+0x115/0x350 [ 531.409247][ T182] shmem_get_folio_gfp+0x37e/0x1330 [ 531.409271][ T182] shmem_file_read_iter+0x1b7/0x890 [ 531.409299][ T182] lo_rw_aio+0xc6d/0xf20 [ 531.409326][ T182] ? __pfx_lo_rw_aio+0x10/0x10 [ 531.409338][ T182] ? do_raw_spin_lock+0x12b/0x2f0 [ 531.409349][ T182] ? kthread_associate_blkcg+0x389/0x660 [ 531.409359][ T182] ? _raw_spin_unlock_irq+0x23/0x50 [ 531.409370][ T182] loop_process_work+0x960/0x11c0 [ 531.409388][ T182] ? __pfx_loop_process_work+0x10/0x10 [ 531.409403][ T182] ? look_up_lock_class+0x57/0x110 [ 531.409414][ T182] ? register_lock_class+0x31/0x2e0 [ 531.409425][ T182] ? __lock_acquire+0x747/0x2de0 [ 531.409437][ T182] ? update_protect_slice+0x45/0x320 [ 531.409452][ T182] ? lock_acquire+0x115/0x350 [ 531.409465][ T182] ? rcu_is_watching+0x16/0xb0 [ 531.409477][ T182] ? process_scheduled_works+0x97a/0x1630 [ 531.409490][ T182] process_scheduled_works+0xc3d/0x1630 [ 531.409526][ T182] ? __pfx_process_scheduled_works+0x10/0x10 [ 531.409549][ T182] ? assign_work+0x3cf/0x5d0 [ 531.409570][ T182] worker_thread+0xa47/0xfb0 [ 531.409604][ T182] kthread+0x38b/0x480 [ 531.409618][ T182] ? __pfx_worker_thread+0x10/0x10 [ 531.409635][ T182] ? __pfx_kthread+0x10/0x10 [ 531.409650][ T182] ret_from_fork+0x514/0xb70 [ 531.409667][ T182] ? __pfx_ret_from_fork+0x10/0x10 [ 531.409679][ T182] ? __switch_to+0xc78/0x1410 [ 531.409715][ T182] ? __pfx_kthread+0x10/0x10 [ 531.409729][ T182] ret_from_fork_asm+0x1a/0x30 [ 531.409753][ T182] [ 531.529164][ T182] memory: usage 96kB, limit 96kB, failcnt 50700 [ 531.529179][ T182] memory+swap: usage 116kB, limit 9007199254740988kB, failcnt 0 [ 531.529189][ T182] kmem: usage 76kB, limit 9007199254740988kB, failcnt 0 [ 531.529196][ T182] Memory cgroup stats for /syz0/test: [ 531.535611][ T182] cache 20480 [ 531.535622][ T182] rss 0 [ 531.535627][ T182] rss_huge 0 [ 531.535632][ T182] shmem 12288 [ 531.535636][ T182] mapped_file 0 [ 531.535641][ T182] dirty 0 [ 531.535645][ T182] writeback 0 [ 531.535650][ T182] workingset_refault_anon 1437 [ 531.535655][ T182] workingset_refault_file 7 [ 531.535660][ T182] swap 20480 [ 531.535665][ T182] swapcached 0 [ 531.535669][ T182] pgpgin 2514 [ 531.535673][ T182] pgpgout 2509 [ 531.535677][ T182] pgfault 1658 [ 531.535680][ T182] pgmajfault 635 [ 531.535682][ T182] inactive_anon 0 [ 531.535685][ T182] active_anon 12288 [ 531.535689][ T182] inactive_file 0 [ 531.535693][ T182] active_file 8192 [ 531.535697][ T182] unevictable 0 [ 531.535702][ T182] hierarchical_memory_limit 98304 [ 531.535707][ T182] hierarchical_memsw_limit 9223372036854771712 [ 531.535712][ T182] total_cache 20480 [ 531.535716][ T182] total_rss 0 [ 531.535720][ T182] total_rss_huge 0 [ 531.535724][ T182] total_shmem 12288 [ 531.535729][ T182] total_mapped_file 0 [ 531.535733][ T182] total_dirty 0 [ 531.535738][ T182] total_writeback 0 [ 531.535743][ T182] total_workingset_refault_anon 1437 [ 531.535748][ T182] total_workingset_refault_file 7 [ 531.535753][ T182] total_swap 20480 [ 531.535757][ T182] total_swapcached 0 [ 531.535762][ T182] total_pgpgin 2514 [ 531.535766][ T182] total_pgpgout 2509 [ 531.535770][ T182] total_pgfault 1658 [ 531.535775][ T182] total_pgmajfault 635 [ 531.535779][ T182] total_inactive_anon 0 [ 531.535783][ T182] total_active_anon 12288 [ 531.535787][ T182] total_inactive_file 0 [ 531.535791][ T182] total_active_file 8192 [ 531.535796][ T182] total_unevictable 0 [ 531.535800][ T182] anon_cost 0 [ 531.535803][ T182] file_cost 0 [ 531.535808][ T182] Out of memory and no killable processes... [ 531.535864][ T182] kernel resource error, dev loop0, sector 8 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 531.535885][ T182] Buffer I/O error on dev loop0, logical block 4, async page read [ 531.997062][T10159] loop0: detected capacity change from 0 to 64 [ 532.111105][T10159] syz.0.1832 invoked oom-killer: gfp_mask=0x108c48(GFP_NOFS|__GFP_MOVABLE|__GFP_NOFAIL|__GFP_HARDWALL), order=0, oom_score_adj=1000 [ 532.111137][T10159] CPU: 0 UID: 0 PID: 10159 Comm: syz.0.1832 Not tainted syzkaller #0 PREEMPT(full) [ 532.111152][T10159] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 532.111159][T10159] Call Trace: [ 532.111165][T10159] [ 532.111171][T10159] dump_stack_lvl+0xe8/0x150 [ 532.111197][T10159] dump_header+0xd3/0x4b0 [ 532.111217][T10159] oom_kill_process+0x3ab/0x9e0 [ 532.111235][T10159] out_of_memory+0xfb1/0x13b0 [ 532.111256][T10159] ? try_charge_memcg+0xc16/0x15f0 [ 532.111280][T10159] ? __pfx_out_of_memory+0x10/0x10 [ 532.111292][T10159] ? do_raw_spin_unlock+0x4d/0x200 [ 532.111312][T10159] try_charge_memcg+0xccc/0x15f0 [ 532.111361][T10159] ? __pfx_try_charge_memcg+0x10/0x10 [ 532.111390][T10159] ? charge_memcg+0x47/0x310 [ 532.111407][T10159] charge_memcg+0x1dd/0x310 [ 532.111423][T10159] __mem_cgroup_charge+0x25/0x80 [ 532.111438][T10159] filemap_add_folio+0x140/0x4e0 [ 532.111455][T10159] __filemap_get_folio_mpol+0x4fa/0xff0 [ 532.111475][T10159] bdev_getblk+0x1ec/0x670 [ 532.111501][T10159] __bread_gfp+0x89/0x370 [ 532.111519][T10159] minix_V1_raw_inode+0x123/0x1c0 [ 532.111536][T10159] minix_iget+0x1dd/0x1810 [ 532.111551][T10159] ? bdev_getblk+0x530/0x670 [ 532.111566][T10159] ? __pfx_minix_iget+0x10/0x10 [ 532.111581][T10159] ? __kmalloc_noprof+0x387/0x710 [ 532.111593][T10159] ? __kmalloc_noprof+0x1a6/0x710 [ 532.111606][T10159] ? __bread_gfp+0xc3/0x370 [ 532.111624][T10159] minix_fill_super+0x11c4/0x1a90 [ 532.111653][T10159] get_tree_bdev_flags+0x430/0x4f0 [ 532.111668][T10159] ? __pfx_minix_fill_super+0x10/0x10 [ 532.111682][T10159] ? __pfx_get_tree_bdev_flags+0x10/0x10 [ 532.111704][T10159] vfs_get_tree+0x92/0x2a0 [ 532.111718][T10159] do_new_mount+0x325/0xb00 [ 532.111741][T10159] ? __pfx_do_new_mount+0x10/0x10 [ 532.111759][T10159] ? ns_capable+0x84/0xe0 [ 532.111775][T10159] ? path_mount+0x647/0x1050 [ 532.111794][T10159] ? user_path_at+0xd4/0x160 [ 532.111808][T10159] __se_sys_mount+0x31d/0x420 [ 532.111829][T10159] ? __pfx___se_sys_mount+0x10/0x10 [ 532.111850][T10159] ? __x64_sys_mount+0x20/0xc0 [ 532.111869][T10159] do_syscall_64+0x166/0x520 [ 532.111887][T10159] ? trace_irq_disable+0x3b/0x140 [ 532.111904][T10159] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 532.111916][T10159] ? clear_bhb_loop+0x70/0xc0 [ 532.111932][T10159] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 532.111944][T10159] RIP: 0033:0x7fee2fd9f44a [ 532.111959][T10159] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 532.111969][T10159] RSP: 002b:00007fee30c25e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 532.111984][T10159] RAX: ffffffffffffffda RBX: 00007fee30c25ee0 RCX: 00007fee2fd9f44a [ 532.111994][T10159] RDX: 00002000000002c0 RSI: 0000200000000300 RDI: 00007fee30c25ea0 [ 532.112002][T10159] RBP: 00002000000002c0 R08: 00007fee30c25ee0 R09: 0000000000008010 [ 532.112010][T10159] R10: 0000000000008010 R11: 0000000000000246 R12: 0000200000000300 [ 532.112018][T10159] R13: 00007fee30c25ea0 R14: 000000000000018a R15: 0000200000000440 [ 532.112040][T10159] [ 532.288115][T10159] memory: usage 96kB, limit 96kB, failcnt 50810 [ 532.288127][T10159] memory+swap: usage 112kB, limit 9007199254740988kB, failcnt 0 [ 532.288133][T10159] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 532.288139][T10159] Memory cgroup stats for /syz0/test: [ 532.288227][T10159] cache 16384 [ 532.288233][T10159] rss 0 [ 532.288241][T10159] rss_huge 0 [ 532.288244][T10159] shmem 16384 [ 532.288247][T10159] mapped_file 0 [ 532.288250][T10159] dirty 0 [ 532.288252][T10159] writeback 0 [ 532.288255][T10159] workingset_refault_anon 1449 [ 532.288258][T10159] workingset_refault_file 7 [ 532.288262][T10159] swap 16384 [ 532.288267][T10159] swapcached 0 [ 532.288271][T10159] pgpgin 2540 [ 532.288275][T10159] pgpgout 2536 [ 532.288279][T10159] pgfault 1676 [ 532.288283][T10159] pgmajfault 640 [ 532.288287][T10159] inactive_anon 8192 [ 532.288291][T10159] active_anon 8192 [ 532.288295][T10159] inactive_file 0 [ 532.288299][T10159] active_file 0 [ 532.288304][T10159] unevictable 0 [ 532.288309][T10159] hierarchical_memory_limit 98304 [ 532.288314][T10159] hierarchical_memsw_limit 9223372036854771712 [ 532.288320][T10159] total_cache 16384 [ 532.288324][T10159] total_rss 0 [ 532.288328][T10159] total_rss_huge 0 [ 532.288332][T10159] total_shmem 16384 [ 532.288338][T10159] total_mapped_file 0 [ 532.288342][T10159] total_dirty 0 [ 532.288346][T10159] total_writeback 0 [ 532.288350][T10159] total_workingset_refault_anon 1449 [ 532.288355][T10159] total_workingset_refault_file 7 [ 532.288360][T10159] total_swap 16384 [ 532.288365][T10159] total_swapcached 0 [ 532.288370][T10159] total_pgpgin 2540 [ 532.288374][T10159] total_pgpgout 2536 [ 532.288379][T10159] total_pgfault 1676 [ 532.288383][T10159] total_pgmajfault 640 [ 532.288389][T10159] total_inactive_anon 8192 [ 532.288394][T10159] total_active_anon 8192 [ 532.288399][T10159] total_inactive_file 0 [ 532.288476][T10159] total_active_file 0 [ 532.288483][T10159] total_unevictable 0 [ 532.288487][T10159] anon_cost 0 [ 532.288492][T10159] file_cost 0 [ 532.288497][T10159] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz0/test,task_memcg=/syz0/test,task=syz.0.1832,pid=10156,uid=0 [ 532.288584][T10159] Memory cgroup out of memory: Killed process 10156 (syz.0.1832) total-vm:45140kB, anon-rss:1360kB, file-rss:1300kB, shmem-rss:0kB, UID:0 pgtables:80kB oom_score_adj:1000 [ 532.428316][T10155] syz.5.1828 invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=1000 [ 532.428344][T10155] CPU: 0 UID: 0 PID: 10155 Comm: syz.5.1828 Not tainted syzkaller #0 PREEMPT(full) [ 532.428356][T10155] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 532.428363][T10155] Call Trace: [ 532.428369][T10155] [ 532.428375][T10155] dump_stack_lvl+0xe8/0x150 [ 532.428401][T10155] dump_header+0xd3/0x4b0 [ 532.428420][T10155] oom_kill_process+0x3ab/0x9e0 [ 532.428436][T10155] out_of_memory+0xfb1/0x13b0 [ 532.428449][T10155] ? try_charge_memcg+0xc16/0x15f0 [ 532.428475][T10155] ? __pfx_out_of_memory+0x10/0x10 [ 532.428487][T10155] ? do_raw_spin_unlock+0x4d/0x200 [ 532.428503][T10155] try_charge_memcg+0xccc/0x15f0 [ 532.428520][T10155] ? __pfx_try_charge_memcg+0x10/0x10 [ 532.428538][T10155] ? charge_memcg+0x47/0x310 [ 532.428548][T10155] charge_memcg+0x1dd/0x310 [ 532.428558][T10155] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 532.428571][T10155] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 532.428588][T10155] __swap_cache_alloc_folio+0x4de/0x990 [ 532.428617][T10155] swap_cache_read_folio+0x44/0x130 [ 532.428637][T10155] swap_cluster_readahead+0x392/0x640 [ 532.428658][T10155] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 532.428691][T10155] swapin_readahead+0x1a3/0xc60 [ 532.428716][T10155] ? __pfx_swapin_readahead+0x10/0x10 [ 532.428737][T10155] ? swap_table_get+0x1e/0x260 [ 532.428753][T10155] ? swap_table_get+0x1e/0x260 [ 532.428768][T10155] ? swap_table_get+0x1e/0x260 [ 532.428783][T10155] ? swap_table_get+0x216/0x260 [ 532.428800][T10155] ? swap_cache_get_folio+0x2e7/0x2f0 [ 532.428822][T10155] do_swap_page+0x7bc/0x4db0 [ 532.428850][T10155] ? do_swap_page+0x120/0x4db0 [ 532.428865][T10155] ? __pfx_do_swap_page+0x10/0x10 [ 532.428880][T10155] ? __pte_offset_map+0x1ae/0x240 [ 532.428899][T10155] ? pte_offset_map_rw_nolock+0xea/0x160 [ 532.428915][T10155] handle_mm_fault+0x1398/0x3750 [ 532.428931][T10155] ? handle_mm_fault+0xf1/0x3750 [ 532.428968][T10155] ? __pfx_handle_mm_fault+0x10/0x10 [ 532.429002][T10155] ? lock_mm_and_find_vma+0xa7/0x340 [ 532.429021][T10155] do_user_addr_fault+0x7f6/0x1480 [ 532.429044][T10155] exc_page_fault+0x6a/0xc0 [ 532.429056][T10155] asm_exc_page_fault+0x26/0x30 [ 532.429065][T10155] RIP: 0010:fault_in_readable+0x8e/0x130 [ 532.429076][T10155] Code: a9 00 00 00 0f 01 cb 0f ae e8 4d 85 f6 40 0f 95 c5 4c 89 ff 4c 89 f6 e8 60 ca a4 ff 4d 39 f7 0f 97 c0 40 84 c5 74 43 4d 89 f5 <41> 8a 45 00 88 44 24 07 49 81 e5 00 f0 ff ff 4d 8d a5 00 10 00 00 [ 532.429085][T10155] RSP: 0018:ffffc9000571faa8 EFLAGS: 00050202 [ 532.429097][T10155] RAX: ffffffff82245601 RBX: 0000000000001000 RCX: ffff88803b950000 [ 532.429106][T10155] RDX: 0000000000000000 RSI: 00007f6c14a01000 RDI: 00007f6c14a02000 [ 532.429115][T10155] RBP: ffffc9000571fc01 R08: ffff88803b950000 R09: 0000000000000002 [ 532.429124][T10155] R10: 0000000000000001 R11: 0000000000000000 R12: 00007ffffffff000 [ 532.429132][T10155] R13: 00007f6c14a01000 R14: 00007f6c14a01000 R15: 00007f6c14a02000 [ 532.429145][T10155] ? fault_in_readable+0x61/0x130 [ 532.429163][T10155] ? fault_in_readable+0x80/0x130 [ 532.429180][T10155] fault_in_iov_iter_readable+0x1c8/0x310 [ 532.429198][T10155] generic_perform_write+0x79b/0x8e0 [ 532.429221][T10155] ? __pfx_generic_perform_write+0x10/0x10 [ 532.429244][T10155] ? preempt_count_add+0x6a/0x140 [ 532.429257][T10155] ? mnt_put_write_access_file+0xbc/0x100 [ 532.429273][T10155] ? file_update_time_flags+0x3ab/0x440 [ 532.429291][T10155] shmem_file_write_iter+0xf8/0x120 [ 532.429308][T10155] vfs_write+0x612/0xba0 [ 532.429327][T10155] ? __pfx_vfs_write+0x10/0x10 [ 532.429341][T10155] ? __fget_files+0x3a2/0x420 [ 532.429357][T10155] ? __fget_files+0x2a/0x420 [ 532.429377][T10155] ? fdget+0x1ac/0x250 [ 532.429392][T10155] ksys_write+0x150/0x270 [ 532.429406][T10155] ? __pfx_ksys_write+0x10/0x10 [ 532.429427][T10155] do_syscall_64+0x166/0x520 [ 532.429442][T10155] ? trace_irq_disable+0x3b/0x140 [ 532.429458][T10155] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 532.429470][T10155] ? clear_bhb_loop+0x70/0xc0 [ 532.429485][T10155] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 532.429496][T10155] RIP: 0033:0x7f6c1d95ea0e [ 532.429508][T10155] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 532.429518][T10155] RSP: 002b:00007f6c1e872da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 532.429530][T10155] RAX: ffffffffffffffda RBX: 00007f6c1e8736c0 RCX: 00007f6c1d95ea0e [ 532.429539][T10155] RDX: 0000000000008000 RSI: 00007f6c14a00000 RDI: 0000000000000007 [ 532.429547][T10155] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 532.429552][T10155] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007 [ 532.429557][T10155] R13: 00007f6c1e872ee0 R14: 00007f6c1e872ea0 R15: 00007f6c14a00000 [ 532.429570][T10155] [ 532.558444][T10155] memory: usage 96kB, limit 96kB, failcnt 15820 [ 532.558462][T10155] memory+swap: usage 120kB, limit 9007199254740988kB, failcnt 0 [ 532.558472][T10155] kmem: usage 84kB, limit 9007199254740988kB, failcnt 0 [ 532.558479][T10155] Memory cgroup stats for /syz5/test: [ 532.558567][T10155] cache 0 [ 532.558573][T10155] rss 0 [ 532.558577][T10155] rss_huge 0 [ 532.558581][T10155] shmem 0 [ 532.558585][T10155] mapped_file 0 [ 532.558589][T10155] dirty 0 [ 532.558593][T10155] writeback 0 [ 532.558598][T10155] workingset_refault_anon 4296 [ 532.558603][T10155] workingset_refault_file 0 [ 532.558608][T10155] swap 24576 [ 532.558612][T10155] swapcached 12288 [ 532.558617][T10155] pgpgin 8668 [ 532.558621][T10155] pgpgout 8665 [ 532.558625][T10155] pgfault 6427 [ 532.737001][T10155] pgmajfault 2587 [ 532.737012][T10155] inactive_anon 8192 [ 532.737016][T10155] active_anon 4096 [ 532.737020][T10155] inactive_file 0 [ 532.737024][T10155] active_file 0 [ 532.737028][T10155] unevictable 0 [ 532.737033][T10155] hierarchical_memory_limit 98304 [ 532.737038][T10155] hierarchical_memsw_limit 9223372036854771712 [ 532.737043][T10155] total_cache 0 [ 532.737048][T10155] total_rss 0 [ 532.737052][T10155] total_rss_huge 0 [ 532.737057][T10155] total_shmem 0 [ 532.737061][T10155] total_mapped_file 0 [ 532.737066][T10155] total_dirty 0 [ 532.737070][T10155] total_writeback 0 [ 532.737074][T10155] total_workingset_refault_anon 4296 [ 532.737078][T10155] total_workingset_refault_file 0 [ 532.737083][T10155] total_swap 24576 [ 532.737087][T10155] total_swapcached 12288 [ 532.737092][T10155] total_pgpgin 8668 [ 532.737096][T10155] total_pgpgout 8665 [ 532.737100][T10155] total_pgfault 6427 [ 532.737104][T10155] total_pgmajfault 2587 [ 532.737108][T10155] total_inactive_anon 8192 [ 532.737112][T10155] total_active_anon 4096 [ 532.737117][T10155] total_inactive_file 0 [ 532.737122][T10155] total_active_file 0 [ 532.737126][T10155] total_unevictable 0 [ 532.737131][T10155] anon_cost 0 [ 532.737135][T10155] file_cost 0 [ 532.737140][T10155] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz5/test,task_memcg=/syz5/test,task=syz.5.1828,pid=10148,uid=0 [ 532.737229][T10155] Memory cgroup out of memory: Killed process 10148 (syz.5.1828) total-vm:180308kB, anon-rss:1360kB, file-rss:1112kB, shmem-rss:0kB, UID:0 pgtables:88kB oom_score_adj:1000 [ 533.140653][T10167] syz.2.1836 invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=1000 [ 533.140810][T10167] CPU: 0 UID: 0 PID: 10167 Comm: syz.2.1836 Not tainted syzkaller #0 PREEMPT(full) [ 533.140826][T10167] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 533.140833][T10167] Call Trace: [ 533.140839][T10167] [ 533.140844][T10167] dump_stack_lvl+0xe8/0x150 [ 533.140868][T10167] dump_header+0xd3/0x4b0 [ 533.140887][T10167] oom_kill_process+0x3ab/0x9e0 [ 533.140904][T10167] out_of_memory+0xfb1/0x13b0 [ 533.140916][T10167] ? try_charge_memcg+0xc16/0x15f0 [ 533.140956][T10167] ? __pfx_out_of_memory+0x10/0x10 [ 533.140969][T10167] ? do_raw_spin_unlock+0x4d/0x200 [ 533.140989][T10167] try_charge_memcg+0xccc/0x15f0 [ 533.141015][T10167] ? __pfx_try_charge_memcg+0x10/0x10 [ 533.141044][T10167] ? charge_memcg+0x47/0x310 [ 533.141061][T10167] charge_memcg+0x1dd/0x310 [ 533.141076][T10167] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 533.141089][T10167] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 533.141106][T10167] __swap_cache_alloc_folio+0x4de/0x990 [ 533.141131][T10167] swap_cache_read_folio+0x44/0x130 [ 533.141150][T10167] swap_cluster_readahead+0x392/0x640 [ 533.141171][T10167] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 533.141204][T10167] swapin_readahead+0x1a3/0xc60 [ 533.141237][T10167] ? __pfx_swapin_readahead+0x10/0x10 [ 533.141257][T10167] ? swap_table_get+0x1e/0x260 [ 533.141273][T10167] ? swap_table_get+0x1e/0x260 [ 533.141289][T10167] ? swap_table_get+0x1e/0x260 [ 533.141305][T10167] ? swap_table_get+0x216/0x260 [ 533.141322][T10167] ? swap_cache_get_folio+0x2e7/0x2f0 [ 533.141346][T10167] do_swap_page+0x7bc/0x4db0 [ 533.141377][T10167] ? do_swap_page+0x120/0x4db0 [ 533.141394][T10167] ? __pfx_do_swap_page+0x10/0x10 [ 533.141408][T10167] ? __pte_offset_map+0x1ae/0x240 [ 533.141427][T10167] ? pte_offset_map_rw_nolock+0xea/0x160 [ 533.141446][T10167] handle_mm_fault+0x1398/0x3750 [ 533.141470][T10167] ? handle_mm_fault+0xf1/0x3750 [ 533.141494][T10167] ? __pfx_handle_mm_fault+0x10/0x10 [ 533.141528][T10167] ? lock_mm_and_find_vma+0xa7/0x340 [ 533.141547][T10167] do_user_addr_fault+0x7f6/0x1480 [ 533.141574][T10167] exc_page_fault+0x6a/0xc0 [ 533.141592][T10167] asm_exc_page_fault+0x26/0x30 [ 533.141605][T10167] RIP: 0010:fault_in_readable+0x8e/0x130 [ 533.141620][T10167] Code: a9 00 00 00 0f 01 cb 0f ae e8 4d 85 f6 40 0f 95 c5 4c 89 ff 4c 89 f6 e8 60 ca a4 ff 4d 39 f7 0f 97 c0 40 84 c5 74 43 4d 89 f5 <41> 8a 45 00 88 44 24 07 49 81 e5 00 f0 ff ff 4d 8d a5 00 10 00 00 [ 533.141631][T10167] RSP: 0018:ffffc90005e4faa8 EFLAGS: 00050202 [ 533.141643][T10167] RAX: ffffffff82245601 RBX: 0000000000001000 RCX: ffff888034c44b00 [ 533.141652][T10167] RDX: 0000000000000000 RSI: 00007fe664e01000 RDI: 00007fe664e02000 [ 533.141660][T10167] RBP: ffffc90005e4fc01 R08: ffff888034c44b00 R09: 0000000000000002 [ 533.141668][T10167] R10: 0000000000000001 R11: 0000000000000000 R12: 00007ffffffff000 [ 533.141676][T10167] R13: 00007fe664e01000 R14: 00007fe664e01000 R15: 00007fe664e02000 [ 533.141689][T10167] ? fault_in_readable+0x61/0x130 [ 533.141707][T10167] ? fault_in_readable+0x80/0x130 [ 533.141722][T10167] fault_in_iov_iter_readable+0x1c8/0x310 [ 533.141739][T10167] generic_perform_write+0x79b/0x8e0 [ 533.141766][T10167] ? __pfx_generic_perform_write+0x10/0x10 [ 533.141784][T10167] ? preempt_count_add+0x6a/0x140 [ 533.141798][T10167] ? mnt_put_write_access_file+0xbc/0x100 [ 533.141816][T10167] ? file_update_time_flags+0x3ab/0x440 [ 533.141833][T10167] shmem_file_write_iter+0xf8/0x120 [ 533.141853][T10167] vfs_write+0x612/0xba0 [ 533.141871][T10167] ? __pfx_vfs_write+0x10/0x10 [ 533.141886][T10167] ? __fget_files+0x3a2/0x420 [ 533.141904][T10167] ? __fget_files+0x2a/0x420 [ 533.141924][T10167] ? fdget+0x1ac/0x250 [ 533.141940][T10167] ksys_write+0x150/0x270 [ 533.141954][T10167] ? __pfx_ksys_write+0x10/0x10 [ 533.141974][T10167] do_syscall_64+0x166/0x520 [ 533.141991][T10167] ? trace_irq_disable+0x3b/0x140 [ 533.142007][T10167] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 533.142019][T10167] ? clear_bhb_loop+0x70/0xc0 [ 533.142033][T10167] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 533.142048][T10167] RIP: 0033:0x7fe66dd5ea0e [ 533.142063][T10167] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 533.142073][T10167] RSP: 002b:00007fe66ec6cda8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 533.142085][T10167] RAX: ffffffffffffffda RBX: 00007fe66ec6d6c0 RCX: 00007fe66dd5ea0e [ 533.142093][T10167] RDX: 0000000000008000 RSI: 00007fe664e00000 RDI: 0000000000000007 [ 533.142100][T10167] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 533.142107][T10167] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007 [ 533.142114][T10167] R13: 00007fe66ec6cee0 R14: 00007fe66ec6cea0 R15: 00007fe664e00000 [ 533.142131][T10167] [ 533.148580][T10167] memory: usage 96kB, limit 96kB, failcnt 16933 [ 533.148595][T10167] memory+swap: usage 120kB, limit 9007199254740988kB, failcnt 0 [ 533.148659][T10167] kmem: usage 84kB, limit 9007199254740988kB, failcnt 0 [ 533.148667][T10167] Memory cgroup stats for /syz2/test: [ 533.148738][T10167] cache 0 [ 533.148743][T10167] rss 0 [ 533.148747][T10167] rss_huge 0 [ 533.148751][T10167] shmem 0 [ 533.148754][T10167] mapped_file 0 [ 533.148758][T10167] dirty 0 [ 533.148762][T10167] writeback 0 [ 533.148766][T10167] workingset_refault_anon 5136 [ 533.148770][T10167] workingset_refault_file 0 [ 533.148774][T10167] swap 24576 [ 533.148778][T10167] swapcached 12288 [ 533.148782][T10167] pgpgin 9128 [ 533.148785][T10167] pgpgout 9125 [ 533.148789][T10167] pgfault 6689 [ 533.148793][T10167] pgmajfault 3117 [ 533.148797][T10167] inactive_anon 4096 [ 533.148801][T10167] active_anon 8192 [ 533.148805][T10167] inactive_file 0 [ 533.148809][T10167] active_file 0 [ 533.148812][T10167] unevictable 0 [ 533.148816][T10167] hierarchical_memory_limit 98304 [ 533.148821][T10167] hierarchical_memsw_limit 9223372036854771712 [ 533.148825][T10167] total_cache 0 [ 533.148829][T10167] total_rss 0 [ 533.148832][T10167] total_rss_huge 0 [ 533.148836][T10167] total_shmem 0 [ 533.148840][T10167] total_mapped_file 0 [ 533.148844][T10167] total_dirty 0 [ 533.148848][T10167] total_writeback 0 [ 533.148852][T10167] total_workingset_refault_anon 5136 [ 533.148856][T10167] total_workingset_refault_file 0 [ 533.148860][T10167] total_swap 24576 [ 533.148864][T10167] total_swapcached 12288 [ 533.148868][T10167] total_pgpgin 9128 [ 533.148872][T10167] total_pgpgout 9125 [ 533.148875][T10167] total_pgfault 6689 [ 533.148879][T10167] total_pgmajfault 3117 [ 533.148883][T10167] total_inactive_anon 4096 [ 533.148888][T10167] total_active_anon 8192 [ 533.148892][T10167] total_inactive_file 0 [ 533.148896][T10167] total_active_file 0 [ 533.148900][T10167] total_unevictable 0 [ 533.148904][T10167] anon_cost 0 [ 533.148907][T10167] file_cost 0 [ 533.148911][T10167] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz2/test,task_memcg=/syz2/test,task=syz.2.1836,pid=10166,uid=0 [ 533.148979][T10167] Memory cgroup out of memory: Killed process 10166 (syz.2.1836) total-vm:180308kB, anon-rss:1360kB, file-rss:1112kB, shmem-rss:0kB, UID:0 pgtables:84kB oom_score_adj:1000 [ 533.749927][T10175] syz.5.1840 invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=1000 [ 533.749946][T10175] CPU: 0 UID: 0 PID: 10175 Comm: syz.5.1840 Not tainted syzkaller #0 PREEMPT(full) [ 533.749955][T10175] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 533.749960][T10175] Call Trace: [ 533.749964][T10175] [ 533.749968][T10175] dump_stack_lvl+0xe8/0x150 [ 533.750002][T10175] dump_header+0xd3/0x4b0 [ 533.750021][T10175] oom_kill_process+0x3ab/0x9e0 [ 533.750039][T10175] out_of_memory+0xfb1/0x13b0 [ 533.750052][T10175] ? try_charge_memcg+0xc16/0x15f0 [ 533.750077][T10175] ? __pfx_out_of_memory+0x10/0x10 [ 533.750089][T10175] ? do_raw_spin_unlock+0x4d/0x200 [ 533.750102][T10175] try_charge_memcg+0xccc/0x15f0 [ 533.750119][T10175] ? __pfx_try_charge_memcg+0x10/0x10 [ 533.750137][T10175] ? charge_memcg+0x47/0x310 [ 533.750148][T10175] charge_memcg+0x1dd/0x310 [ 533.750158][T10175] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 533.750167][T10175] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 533.750178][T10175] __swap_cache_alloc_folio+0x4de/0x990 [ 533.750196][T10175] swap_cache_read_folio+0x44/0x130 [ 533.750214][T10175] swap_cluster_readahead+0x392/0x640 [ 533.750228][T10175] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 533.750248][T10175] swapin_readahead+0x1a3/0xc60 [ 533.750264][T10175] ? __pfx_swapin_readahead+0x10/0x10 [ 533.750278][T10175] ? swap_table_get+0x1e/0x260 [ 533.750289][T10175] ? swap_table_get+0x1e/0x260 [ 533.750298][T10175] ? swap_table_get+0x1e/0x260 [ 533.750308][T10175] ? swap_table_get+0x216/0x260 [ 533.750319][T10175] ? swap_cache_get_folio+0x2e7/0x2f0 [ 533.750333][T10175] do_swap_page+0x7bc/0x4db0 [ 533.750351][T10175] ? do_swap_page+0x120/0x4db0 [ 533.750361][T10175] ? __pfx_do_swap_page+0x10/0x10 [ 533.750370][T10175] ? __pte_offset_map+0x1ae/0x240 [ 533.750382][T10175] ? pte_offset_map_rw_nolock+0xea/0x160 [ 533.750394][T10175] handle_mm_fault+0x1398/0x3750 [ 533.750409][T10175] ? handle_mm_fault+0xf1/0x3750 [ 533.750429][T10175] ? __pfx_handle_mm_fault+0x10/0x10 [ 533.750459][T10175] ? lock_mm_and_find_vma+0xa7/0x340 [ 533.750475][T10175] do_user_addr_fault+0x7f6/0x1480 [ 533.750492][T10175] exc_page_fault+0x6a/0xc0 [ 533.750505][T10175] asm_exc_page_fault+0x26/0x30 [ 533.750513][T10175] RIP: 0010:fault_in_readable+0x8e/0x130 [ 533.750523][T10175] Code: a9 00 00 00 0f 01 cb 0f ae e8 4d 85 f6 40 0f 95 c5 4c 89 ff 4c 89 f6 e8 60 ca a4 ff 4d 39 f7 0f 97 c0 40 84 c5 74 43 4d 89 f5 <41> 8a 45 00 88 44 24 07 49 81 e5 00 f0 ff ff 4d 8d a5 00 10 00 00 [ 533.750530][T10175] RSP: 0018:ffffc90006367aa8 EFLAGS: 00050202 [ 533.750538][T10175] RAX: ffffffff82245601 RBX: 0000000000001000 RCX: ffff888030fe4b00 [ 533.750544][T10175] RDX: 0000000000000000 RSI: 00007f6c14a01000 RDI: 00007f6c14a02000 [ 533.750550][T10175] RBP: ffffc90006367c01 R08: ffff888030fe4b00 R09: 0000000000000002 [ 533.750555][T10175] R10: 0000000000000001 R11: 0000000000000000 R12: 00007ffffffff000 [ 533.750560][T10175] R13: 00007f6c14a01000 R14: 00007f6c14a01000 R15: 00007f6c14a02000 [ 533.750569][T10175] ? fault_in_readable+0x61/0x130 [ 533.750581][T10175] ? fault_in_readable+0x80/0x130 [ 533.750591][T10175] fault_in_iov_iter_readable+0x1c8/0x310 [ 533.750602][T10175] generic_perform_write+0x79b/0x8e0 [ 533.750618][T10175] ? __pfx_generic_perform_write+0x10/0x10 [ 533.750629][T10175] ? preempt_count_add+0x6a/0x140 [ 533.750637][T10175] ? mnt_put_write_access_file+0xbc/0x100 [ 533.750647][T10175] ? file_update_time_flags+0x3ab/0x440 [ 533.750658][T10175] shmem_file_write_iter+0xf8/0x120 [ 533.750670][T10175] vfs_write+0x612/0xba0 [ 533.750681][T10175] ? __pfx_vfs_write+0x10/0x10 [ 533.750691][T10175] ? __fget_files+0x3a2/0x420 [ 533.750702][T10175] ? __fget_files+0x2a/0x420 [ 533.750717][T10175] ? fdget+0x1ac/0x250 [ 533.750727][T10175] ksys_write+0x150/0x270 [ 533.750736][T10175] ? __pfx_ksys_write+0x10/0x10 [ 533.750749][T10175] do_syscall_64+0x166/0x520 [ 533.750758][T10175] ? trace_irq_disable+0x3b/0x140 [ 533.750769][T10175] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 533.750777][T10175] ? clear_bhb_loop+0x70/0xc0 [ 533.750787][T10175] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 533.750794][T10175] RIP: 0033:0x7f6c1d95ea0e [ 533.750834][T10175] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 533.750843][T10175] RSP: 002b:00007f6c1e872da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 533.750855][T10175] RAX: ffffffffffffffda RBX: 00007f6c1e8736c0 RCX: 00007f6c1d95ea0e [ 533.750864][T10175] RDX: 0000000000008000 RSI: 00007f6c14a00000 RDI: 0000000000000007 [ 533.750871][T10175] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 533.750878][T10175] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007 [ 533.750886][T10175] R13: 00007f6c1e872ee0 R14: 00007f6c1e872ea0 R15: 00007f6c14a00000 [ 533.750900][T10175] [ 533.820745][T10175] memory: usage 96kB, limit 96kB, failcnt 15912 [ 533.820761][T10175] memory+swap: usage 120kB, limit 9007199254740988kB, failcnt 0 [ 533.820772][T10175] kmem: usage 84kB, limit 9007199254740988kB, failcnt 0 [ 533.820780][T10175] Memory cgroup stats for /syz5/test: [ 533.820871][T10175] cache 0 [ 533.820878][T10175] rss 0 [ 533.820883][T10175] rss_huge 0 [ 533.820888][T10175] shmem 0 [ 533.820894][T10175] mapped_file 0 [ 533.820898][T10175] dirty 0 [ 533.820902][T10175] writeback 0 [ 533.820907][T10175] workingset_refault_anon 4301 [ 533.820912][T10175] workingset_refault_file 0 [ 533.820917][T10175] swap 24576 [ 533.820921][T10175] swapcached 12288 [ 533.820927][T10175] pgpgin 8680 [ 533.820933][T10175] pgpgout 8677 [ 533.820937][T10175] pgfault 6443 [ 533.820941][T10175] pgmajfault 2591 [ 533.820945][T10175] inactive_anon 4096 [ 533.820950][T10175] active_anon 8192 [ 533.820955][T10175] inactive_file 0 [ 533.820960][T10175] active_file 0 [ 533.820965][T10175] unevictable 0 [ 533.820969][T10175] hierarchical_memory_limit 98304 [ 533.820975][T10175] hierarchical_memsw_limit 9223372036854771712 [ 533.820981][T10175] total_cache 0 [ 533.820986][T10175] total_rss 0 [ 533.820991][T10175] total_rss_huge 0 [ 533.820996][T10175] total_shmem 0 [ 533.821001][T10175] total_mapped_file 0 [ 533.821006][T10175] total_dirty 0 [ 533.821011][T10175] total_writeback 0 [ 533.821016][T10175] total_workingset_refault_anon 4301 [ 533.821022][T10175] total_workingset_refault_file 0 [ 533.821027][T10175] total_swap 24576 [ 533.821032][T10175] total_swapcached 12288 [ 533.821037][T10175] total_pgpgin 8680 [ 533.821043][T10175] total_pgpgout 8677 [ 533.821048][T10175] total_pgfault 6443 [ 533.821053][T10175] total_pgmajfault 2591 [ 533.821058][T10175] total_inactive_anon 4096 [ 533.821064][T10175] total_active_anon 8192 [ 533.821069][T10175] total_inactive_file 0 [ 533.821074][T10175] total_active_file 0 [ 533.821080][T10175] total_unevictable 0 [ 533.821085][T10175] anon_cost 0 [ 533.821090][T10175] file_cost 0 [ 533.821095][T10175] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz5/test,task_memcg=/syz5/test,task=syz.5.1840,pid=10174,uid=0 [ 533.821183][T10175] Memory cgroup out of memory: Killed process 10174 (syz.5.1840) total-vm:180308kB, anon-rss:1360kB, file-rss:1112kB, shmem-rss:0kB, UID:0 pgtables:88kB oom_score_adj:1000 [ 534.498892][ T27] oom_reaper: reaped process 10156 (syz.0.1832), now anon-rss:0kB, file-rss:72kB, shmem-rss:0kB [ 534.513647][ T57] kworker/u4:4 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 534.513686][ T57] CPU: 0 UID: 0 PID: 57 Comm: kworker/u4:4 Not tainted syzkaller #0 PREEMPT(full) [ 534.513700][ T57] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 534.513709][ T57] Workqueue: loop0 loop_rootcg_workfn [ 534.513733][ T57] Call Trace: [ 534.513739][ T57] [ 534.513746][ T57] dump_stack_lvl+0xe8/0x150 [ 534.513770][ T57] dump_header+0xd3/0x4b0 [ 534.513791][ T57] out_of_memory+0x1021/0x13b0 [ 534.513806][ T57] ? try_charge_memcg+0xc16/0x15f0 [ 534.513833][ T57] ? __pfx_out_of_memory+0x10/0x10 [ 534.513846][ T57] ? do_raw_spin_unlock+0x4d/0x200 [ 534.513869][ T57] try_charge_memcg+0xccc/0x15f0 [ 534.513917][ T57] ? __pfx_try_charge_memcg+0x10/0x10 [ 534.513948][ T57] ? charge_memcg+0x47/0x310 [ 534.513967][ T57] charge_memcg+0x1dd/0x310 [ 534.513984][ T57] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 534.513999][ T57] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 534.514018][ T57] __swap_cache_alloc_folio+0x4de/0x990 [ 534.514045][ T57] swap_cluster_readahead+0x4f2/0x640 [ 534.514070][ T57] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 534.514093][ T57] ? swap_table_get+0x1e/0x260 [ 534.514116][ T57] ? swap_cache_get_folio+0x2e7/0x2f0 [ 534.514135][ T57] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 534.514156][ T57] shmem_swapin_folio+0xe76/0x1f80 [ 534.514182][ T57] ? filemap_get_entry+0xcd/0x3f0 [ 534.514203][ T57] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 534.514227][ T57] ? lock_acquire+0x115/0x350 [ 534.514246][ T57] shmem_get_folio_gfp+0x37e/0x1330 [ 534.514275][ T57] shmem_file_read_iter+0x1b7/0x890 [ 534.514305][ T57] lo_rw_aio+0xc6d/0xf20 [ 534.514334][ T57] ? __pfx_lo_rw_aio+0x10/0x10 [ 534.514350][ T57] ? do_raw_spin_lock+0x12b/0x2f0 [ 534.514369][ T57] ? kthread_associate_blkcg+0x389/0x660 [ 534.514385][ T57] ? _raw_spin_unlock_irq+0x23/0x50 [ 534.514405][ T57] loop_process_work+0x960/0x11c0 [ 534.514436][ T57] ? __pfx_loop_process_work+0x10/0x10 [ 534.514454][ T57] ? look_up_lock_class+0x57/0x110 [ 534.514472][ T57] ? register_lock_class+0x31/0x2e0 [ 534.514492][ T57] ? __lock_acquire+0x747/0x2de0 [ 534.514518][ T57] ? do_raw_spin_lock+0x12b/0x2f0 [ 534.514539][ T57] ? lock_acquire+0x115/0x350 [ 534.514560][ T57] ? rcu_is_watching+0x16/0xb0 [ 534.514581][ T57] ? process_scheduled_works+0x97a/0x1630 [ 534.514601][ T57] process_scheduled_works+0xc3d/0x1630 [ 534.514642][ T57] ? __pfx_process_scheduled_works+0x10/0x10 [ 534.514667][ T57] ? assign_work+0x3cf/0x5d0 [ 534.514697][ T57] worker_thread+0xa47/0xfb0 [ 534.514727][ T57] ? __kthread_parkme+0x71/0x1f0 [ 534.514748][ T57] kthread+0x38b/0x480 [ 534.514764][ T57] ? __pfx_worker_thread+0x10/0x10 [ 534.514782][ T57] ? __pfx_kthread+0x10/0x10 [ 534.514828][ T57] ret_from_fork+0x514/0xb70 [ 534.514847][ T57] ? __pfx_ret_from_fork+0x10/0x10 [ 534.514863][ T57] ? __switch_to+0xc78/0x1410 [ 534.514884][ T57] ? __pfx_kthread+0x10/0x10 [ 534.514902][ T57] ret_from_fork_asm+0x1a/0x30 [ 534.514924][ T57] [ 534.561670][ T57] memory: usage 96kB, limit 96kB, failcnt 51065 [ 534.561692][ T57] memory+swap: usage 112kB, limit 9007199254740988kB, failcnt 0 [ 534.561702][ T57] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 534.561711][ T57] Memory cgroup stats for /syz0/test: [ 534.561799][ T57] cache 16384 [ 534.561807][ T57] rss 0 [ 534.561812][ T57] rss_huge 0 [ 534.561817][ T57] shmem 16384 [ 534.561822][ T57] mapped_file 0 [ 534.561826][ T57] dirty 0 [ 534.561831][ T57] writeback 0 [ 534.561836][ T57] workingset_refault_anon 1449 [ 534.561842][ T57] workingset_refault_file 7 [ 534.561848][ T57] swap 16384 [ 534.561852][ T57] swapcached 0 [ 534.561857][ T57] pgpgin 2541 [ 534.561863][ T57] pgpgout 2537 [ 534.561867][ T57] pgfault 1676 [ 534.561872][ T57] pgmajfault 640 [ 534.561876][ T57] inactive_anon 4096 [ 534.561880][ T57] active_anon 12288 [ 534.561885][ T57] inactive_file 0 [ 534.561889][ T57] active_file 0 [ 534.561894][ T57] unevictable 0 [ 534.561899][ T57] hierarchical_memory_limit 98304 [ 534.561904][ T57] hierarchical_memsw_limit 9223372036854771712 [ 534.561911][ T57] total_cache 16384 [ 534.561917][ T57] total_rss 0 [ 534.561921][ T57] total_rss_huge 0 [ 534.561925][ T57] total_shmem 16384 [ 534.561929][ T57] total_mapped_file 0 [ 534.561933][ T57] total_dirty 0 [ 534.561937][ T57] total_writeback 0 [ 534.561942][ T57] total_workingset_refault_anon 1449 [ 534.561948][ T57] total_workingset_refault_file 7 [ 534.561953][ T57] total_swap 16384 [ 534.561957][ T57] total_swapcached 0 [ 534.561962][ T57] total_pgpgin 2541 [ 534.561969][ T57] total_pgpgout 2537 [ 534.561973][ T57] total_pgfault 1676 [ 534.561978][ T57] total_pgmajfault 640 [ 534.561982][ T57] total_inactive_anon 4096 [ 534.561987][ T57] total_active_anon 12288 [ 534.561992][ T57] total_inactive_file 0 [ 534.561997][ T57] total_active_file 0 [ 534.562002][ T57] total_unevictable 0 [ 534.562006][ T57] anon_cost 0 [ 534.562011][ T57] file_cost 0 [ 534.562015][ T57] Out of memory and no killable processes... [ 534.562070][ T57] kernel resource error, dev loop0, sector 8 op 0x0:(READ) flags 0x880700 phys_seg 1 prio class 2 [ 534.841016][ T1061] kworker/u4:9 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 534.841037][ T1061] CPU: 0 UID: 0 PID: 1061 Comm: kworker/u4:9 Not tainted syzkaller #0 PREEMPT(full) [ 534.841047][ T1061] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 534.841052][ T1061] Workqueue: loop0 loop_rootcg_workfn [ 534.841069][ T1061] Call Trace: [ 534.841072][ T1061] [ 534.841076][ T1061] dump_stack_lvl+0xe8/0x150 [ 534.841091][ T1061] dump_header+0xd3/0x4b0 [ 534.841104][ T1061] out_of_memory+0x1021/0x13b0 [ 534.841114][ T1061] ? try_charge_memcg+0xc16/0x15f0 [ 534.841129][ T1061] ? __pfx_out_of_memory+0x10/0x10 [ 534.841137][ T1061] ? do_raw_spin_unlock+0x4d/0x200 [ 534.841150][ T1061] try_charge_memcg+0xccc/0x15f0 [ 534.841166][ T1061] ? __pfx_try_charge_memcg+0x10/0x10 [ 534.841186][ T1061] ? charge_memcg+0x47/0x310 [ 534.841196][ T1061] charge_memcg+0x1dd/0x310 [ 534.841206][ T1061] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 534.841215][ T1061] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 534.841226][ T1061] __swap_cache_alloc_folio+0x4de/0x990 [ 534.841242][ T1061] swap_cluster_readahead+0x4f2/0x640 [ 534.841256][ T1061] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 534.841269][ T1061] ? swap_table_get+0x1e/0x260 [ 534.841298][ T1061] ? swap_cache_get_folio+0x2e7/0x2f0 [ 534.841311][ T1061] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 534.841324][ T1061] shmem_swapin_folio+0xe76/0x1f80 [ 534.841339][ T1061] ? filemap_get_entry+0xcd/0x3f0 [ 534.841351][ T1061] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 534.841365][ T1061] ? lock_acquire+0x115/0x350 [ 534.841376][ T1061] shmem_get_folio_gfp+0x37e/0x1330 [ 534.841391][ T1061] shmem_file_read_iter+0x1b7/0x890 [ 534.841408][ T1061] lo_rw_aio+0xc6d/0xf20 [ 534.841425][ T1061] ? __pfx_lo_rw_aio+0x10/0x10 [ 534.841434][ T1061] ? do_raw_spin_lock+0x12b/0x2f0 [ 534.841445][ T1061] ? kthread_associate_blkcg+0x389/0x660 [ 534.841454][ T1061] ? _raw_spin_unlock_irq+0x23/0x50 [ 534.841466][ T1061] loop_process_work+0x960/0x11c0 [ 534.841483][ T1061] ? __pfx_loop_process_work+0x10/0x10 [ 534.841493][ T1061] ? look_up_lock_class+0x57/0x110 [ 534.841511][ T1061] ? register_lock_class+0x31/0x2e0 [ 534.841523][ T1061] ? __lock_acquire+0x747/0x2de0 [ 534.841535][ T1061] ? update_protect_slice+0x45/0x320 [ 534.841550][ T1061] ? lock_acquire+0x115/0x350 [ 534.841563][ T1061] ? rcu_is_watching+0x16/0xb0 [ 534.841576][ T1061] ? process_scheduled_works+0x97a/0x1630 [ 534.841587][ T1061] process_scheduled_works+0xc3d/0x1630 [ 534.841611][ T1061] ? __pfx_process_scheduled_works+0x10/0x10 [ 534.841624][ T1061] ? assign_work+0x3cf/0x5d0 [ 534.841637][ T1061] worker_thread+0xa47/0xfb0 [ 534.841660][ T1061] kthread+0x38b/0x480 [ 534.841669][ T1061] ? __pfx_worker_thread+0x10/0x10 [ 534.841684][ T1061] ? __pfx_kthread+0x10/0x10 [ 534.841693][ T1061] ret_from_fork+0x514/0xb70 [ 534.841703][ T1061] ? __pfx_ret_from_fork+0x10/0x10 [ 534.841712][ T1061] ? __switch_to+0xc78/0x1410 [ 534.841725][ T1061] ? __pfx_kthread+0x10/0x10 [ 534.841735][ T1061] ret_from_fork_asm+0x1a/0x30 [ 534.841749][ T1061] [ 534.843490][ T1061] memory: usage 96kB, limit 96kB, failcnt 51084 [ 534.843503][ T1061] memory+swap: usage 112kB, limit 9007199254740988kB, failcnt 0 [ 534.843511][ T1061] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 534.843518][ T1061] Memory cgroup stats for /syz0/test: [ 534.843582][ T1061] cache 16384 [ 534.843586][ T1061] rss 0 [ 534.843589][ T1061] rss_huge 0 [ 534.843592][ T1061] shmem 16384 [ 534.843595][ T1061] mapped_file 0 [ 534.843597][ T1061] dirty 0 [ 534.843600][ T1061] writeback 0 [ 534.843603][ T1061] workingset_refault_anon 1449 [ 534.843606][ T1061] workingset_refault_file 7 [ 534.843609][ T1061] swap 16384 [ 534.843612][ T1061] swapcached 0 [ 534.843614][ T1061] pgpgin 2541 [ 534.843617][ T1061] pgpgout 2537 [ 534.843620][ T1061] pgfault 1676 [ 534.843623][ T1061] pgmajfault 640 [ 534.843626][ T1061] inactive_anon 4096 [ 534.843629][ T1061] active_anon 12288 [ 534.843632][ T1061] inactive_file 0 [ 534.843635][ T1061] active_file 0 [ 534.843637][ T1061] unevictable 0 [ 534.843640][ T1061] hierarchical_memory_limit 98304 [ 534.843643][ T1061] hierarchical_memsw_limit 9223372036854771712 [ 534.843647][ T1061] total_cache 16384 [ 534.843650][ T1061] total_rss 0 [ 534.843653][ T1061] total_rss_huge 0 [ 534.843656][ T1061] total_shmem 16384 [ 534.843659][ T1061] total_mapped_file 0 [ 534.843662][ T1061] total_dirty 0 [ 534.843664][ T1061] total_writeback 0 [ 534.843667][ T1061] total_workingset_refault_anon 1449 [ 534.843677][ T1061] total_workingset_refault_file 7 [ 534.843682][ T1061] total_swap 16384 [ 534.843686][ T1061] total_swapcached 0 [ 534.843690][ T1061] total_pgpgin 2541 [ 534.843694][ T1061] total_pgpgout 2537 [ 534.843699][ T1061] total_pgfault 1676 [ 534.843703][ T1061] total_pgmajfault 640 [ 534.843708][ T1061] total_inactive_anon 4096 [ 534.843713][ T1061] total_active_anon 12288 [ 534.843718][ T1061] total_inactive_file 0 [ 534.843723][ T1061] total_active_file 0 [ 534.843728][ T1061] total_unevictable 0 [ 534.843733][ T1061] anon_cost 0 [ 534.843737][ T1061] file_cost 0 [ 534.843742][ T1061] Out of memory and no killable processes... [ 534.843777][ T1061] kernel resource error, dev loop0, sector 8 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 534.843793][ T1061] Buffer I/O error on dev loop0, logical block 4, async page read [ 535.188897][ T1061] kworker/u4:9 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 535.188930][ T1061] CPU: 0 UID: 0 PID: 1061 Comm: kworker/u4:9 Not tainted syzkaller #0 PREEMPT(full) [ 535.188967][ T1061] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 535.188978][ T1061] Workqueue: loop0 loop_rootcg_workfn [ 535.189002][ T1061] Call Trace: [ 535.189008][ T1061] [ 535.189013][ T1061] dump_stack_lvl+0xe8/0x150 [ 535.189034][ T1061] dump_header+0xd3/0x4b0 [ 535.189055][ T1061] out_of_memory+0x1021/0x13b0 [ 535.189069][ T1061] ? try_charge_memcg+0xc16/0x15f0 [ 535.189095][ T1061] ? __pfx_out_of_memory+0x10/0x10 [ 535.189108][ T1061] ? do_raw_spin_unlock+0x4d/0x200 [ 535.189129][ T1061] try_charge_memcg+0xccc/0x15f0 [ 535.189158][ T1061] ? __pfx_try_charge_memcg+0x10/0x10 [ 535.189189][ T1061] ? charge_memcg+0x47/0x310 [ 535.189206][ T1061] charge_memcg+0x1dd/0x310 [ 535.189223][ T1061] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 535.189238][ T1061] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 535.189257][ T1061] __swap_cache_alloc_folio+0x4de/0x990 [ 535.189287][ T1061] swap_cluster_readahead+0x4f2/0x640 [ 535.189315][ T1061] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 535.189337][ T1061] ? swap_table_get+0x1e/0x260 [ 535.189358][ T1061] ? swap_cache_get_folio+0x2e7/0x2f0 [ 535.189377][ T1061] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 535.189395][ T1061] shmem_swapin_folio+0xe76/0x1f80 [ 535.189421][ T1061] ? filemap_get_entry+0xcd/0x3f0 [ 535.189441][ T1061] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 535.189460][ T1061] ? __lock_acquire+0x747/0x2de0 [ 535.189481][ T1061] shmem_get_folio_gfp+0x37e/0x1330 [ 535.189517][ T1061] shmem_file_read_iter+0x1b7/0x890 [ 535.189546][ T1061] lo_rw_aio+0xc6d/0xf20 [ 535.189575][ T1061] ? __pfx_lo_rw_aio+0x10/0x10 [ 535.189591][ T1061] ? do_raw_spin_lock+0x12b/0x2f0 [ 535.189610][ T1061] ? kthread_associate_blkcg+0x389/0x660 [ 535.189625][ T1061] ? _raw_spin_unlock_irq+0x23/0x50 [ 535.189645][ T1061] loop_process_work+0x960/0x11c0 [ 535.189695][ T1061] ? __pfx_loop_process_work+0x10/0x10 [ 535.189712][ T1061] ? look_up_lock_class+0x57/0x110 [ 535.189729][ T1061] ? register_lock_class+0x31/0x2e0 [ 535.189747][ T1061] ? __lock_acquire+0x747/0x2de0 [ 535.189767][ T1061] ? update_protect_slice+0x45/0x320 [ 535.189795][ T1061] ? lock_acquire+0x115/0x350 [ 535.189817][ T1061] ? rcu_is_watching+0x16/0xb0 [ 535.189837][ T1061] ? process_scheduled_works+0x97a/0x1630 [ 535.189856][ T1061] process_scheduled_works+0xc3d/0x1630 [ 535.189896][ T1061] ? __pfx_process_scheduled_works+0x10/0x10 [ 535.189917][ T1061] ? assign_work+0x3cf/0x5d0 [ 535.189938][ T1061] worker_thread+0xa47/0xfb0 [ 535.189977][ T1061] kthread+0x38b/0x480 [ 535.189993][ T1061] ? __pfx_worker_thread+0x10/0x10 [ 535.190009][ T1061] ? __pfx_kthread+0x10/0x10 [ 535.190025][ T1061] ret_from_fork+0x514/0xb70 [ 535.190045][ T1061] ? __pfx_ret_from_fork+0x10/0x10 [ 535.190059][ T1061] ? __switch_to+0xc78/0x1410 [ 535.190078][ T1061] ? __pfx_kthread+0x10/0x10 [ 535.190091][ T1061] ret_from_fork_asm+0x1a/0x30 [ 535.190113][ T1061] [ 535.353046][ T1061] memory: usage 96kB, limit 96kB, failcnt 51103 [ 535.353061][ T1061] memory+swap: usage 112kB, limit 9007199254740988kB, failcnt 0 [ 535.353069][ T1061] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 535.353077][ T1061] Memory cgroup stats for /syz0/test: [ 535.353171][ T1061] cache 16384 [ 535.353178][ T1061] rss 0 [ 535.353182][ T1061] rss_huge 0 [ 535.353186][ T1061] shmem 16384 [ 535.353191][ T1061] mapped_file 0 [ 535.353196][ T1061] dirty 0 [ 535.353200][ T1061] writeback 0 [ 535.353204][ T1061] workingset_refault_anon 1449 [ 535.353209][ T1061] workingset_refault_file 7 [ 535.353214][ T1061] swap 16384 [ 535.353218][ T1061] swapcached 0 [ 535.353223][ T1061] pgpgin 2541 [ 535.353227][ T1061] pgpgout 2537 [ 535.353232][ T1061] pgfault 1676 [ 535.353236][ T1061] pgmajfault 640 [ 535.353241][ T1061] inactive_anon 4096 [ 535.353245][ T1061] active_anon 12288 [ 535.353250][ T1061] inactive_file 0 [ 535.353255][ T1061] active_file 0 [ 535.353259][ T1061] unevictable 0 [ 535.353263][ T1061] hierarchical_memory_limit 98304 [ 535.353268][ T1061] hierarchical_memsw_limit 9223372036854771712 [ 535.353273][ T1061] total_cache 16384 [ 535.353278][ T1061] total_rss 0 [ 535.353282][ T1061] total_rss_huge 0 [ 535.353287][ T1061] total_shmem 16384 [ 535.353292][ T1061] total_mapped_file 0 [ 535.353296][ T1061] total_dirty 0 [ 535.353301][ T1061] total_writeback 0 [ 535.353305][ T1061] total_workingset_refault_anon 1449 [ 535.353310][ T1061] total_workingset_refault_file 7 [ 535.353315][ T1061] total_swap 16384 [ 535.353319][ T1061] total_swapcached 0 [ 535.353323][ T1061] total_pgpgin 2541 [ 535.353328][ T1061] total_pgpgout 2537 [ 535.353333][ T1061] total_pgfault 1676 [ 535.353337][ T1061] total_pgmajfault 640 [ 535.353342][ T1061] total_inactive_anon 4096 [ 535.353347][ T1061] total_active_anon 12288 [ 535.353351][ T1061] total_inactive_file 0 [ 535.353355][ T1061] total_active_file 0 [ 535.353360][ T1061] total_unevictable 0 [ 535.353365][ T1061] anon_cost 0 [ 535.353369][ T1061] file_cost 0 [ 535.353373][ T1061] Out of memory and no killable processes... [ 535.353449][ T1061] kernel resource error, dev loop0, sector 10 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 535.353472][ T1061] Buffer I/O error on dev loop0, logical block 5, async page read [ 535.354953][T10186] syz.1.1846 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=1000 [ 535.355030][T10186] CPU: 0 UID: 0 PID: 10186 Comm: syz.1.1846 Not tainted syzkaller #0 PREEMPT(full) [ 535.355044][T10186] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 535.355053][T10186] Call Trace: [ 535.355059][T10186] [ 535.355064][T10186] dump_stack_lvl+0xe8/0x150 [ 535.355090][T10186] dump_header+0xd3/0x4b0 [ 535.355108][T10186] oom_kill_process+0x3ab/0x9e0 [ 535.355127][T10186] out_of_memory+0xfb1/0x13b0 [ 535.355140][T10186] ? try_charge_memcg+0xc16/0x15f0 [ 535.355170][T10186] ? __pfx_out_of_memory+0x10/0x10 [ 535.355183][T10186] ? do_raw_spin_unlock+0x4d/0x200 [ 535.355202][T10186] try_charge_memcg+0xccc/0x15f0 [ 535.355228][T10186] ? __pfx_try_charge_memcg+0x10/0x10 [ 535.355248][T10186] ? percpu_ref_tryget+0x15/0x180 [ 535.355270][T10186] ? __memcg_kmem_charge_page+0x158/0x530 [ 535.355287][T10186] __memcg_kmem_charge_page+0x32f/0x530 [ 535.355300][T10186] ? __memcg_kmem_charge_page+0x158/0x530 [ 535.355314][T10186] memcg_charge_kernel_stack+0x15d/0x4c0 [ 535.355362][T10186] dup_task_struct+0x2e1/0xa00 [ 535.355383][T10186] copy_process+0x7ea/0x44b0 [ 535.355399][T10186] ? lock_acquire+0x115/0x350 [ 535.355415][T10186] ? page_table_check_set+0x1a4/0x590 [ 535.355441][T10186] ? lock_acquire+0x115/0x350 [ 535.355462][T10186] ? __pfx_copy_process+0x10/0x10 [ 535.355486][T10186] kernel_clone+0x2d7/0x940 [ 535.355507][T10186] ? __pfx_kernel_clone+0x10/0x10 [ 535.355537][T10186] __se_sys_clone3+0x33c/0x360 [ 535.355557][T10186] ? __pfx___se_sys_clone3+0x10/0x10 [ 535.355583][T10186] ? _copy_to_user+0x8a/0xb0 [ 535.355609][T10186] ? do_user_addr_fault+0xd3f/0x1480 [ 535.355632][T10186] do_syscall_64+0x166/0x520 [ 535.355648][T10186] ? trace_irq_disable+0x3b/0x140 [ 535.355664][T10186] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 535.355677][T10186] ? clear_bhb_loop+0x70/0xc0 [ 535.355691][T10186] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 535.355703][T10186] RIP: 0033:0x7ff23779efc9 [ 535.355717][T10186] Code: 90 b8 01 00 00 00 b9 01 00 00 00 eb ec 0f 1f 40 00 b8 ea ff ff ff 48 85 ff 74 28 48 85 d2 74 23 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 14 74 01 c3 31 ed 4c 89 c7 ff d2 48 89 c7 b8 3c 00 00 [ 535.355728][T10186] RSP: 002b:00007fff1fdd0b88 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3 [ 535.355742][T10186] RAX: ffffffffffffffda RBX: 00007ff23775a560 RCX: 00007ff23779efc9 [ 535.355751][T10186] RDX: 00007ff23775a560 RSI: 0000000000000058 RDI: 00007fff1fdd0be0 [ 535.355759][T10186] RBP: 00007ff2386976c0 R08: 00007ff2386976c0 R09: 00007fff1fdd0cc7 [ 535.355766][T10186] R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffe8 [ 535.355772][T10186] R13: 000000000000006e R14: 00007fff1fdd0be0 R15: 00007fff1fdd0cc8 [ 535.355784][T10186] [ 535.551987][T10186] memory: usage 96kB, limit 96kB, failcnt 15432 [ 535.552067][T10186] memory+swap: usage 100kB, limit 9007199254740988kB, failcnt 0 [ 535.552078][T10186] kmem: usage 96kB, limit 9007199254740988kB, failcnt 0 [ 535.552086][T10186] Memory cgroup stats for /syz1/test: [ 535.552176][T10186] cache 0 [ 535.552182][T10186] rss 0 [ 535.552186][T10186] rss_huge 0 [ 535.552191][T10186] shmem 0 [ 535.552195][T10186] mapped_file 0 [ 535.552199][T10186] dirty 0 [ 535.552204][T10186] writeback 0 [ 535.552208][T10186] workingset_refault_anon 4279 [ 535.552213][T10186] workingset_refault_file 0 [ 535.552217][T10186] swap 4096 [ 535.552221][T10186] swapcached 0 [ 535.552226][T10186] pgpgin 8724 [ 535.552230][T10186] pgpgout 8724 [ 535.552234][T10186] pgfault 6455 [ 535.552238][T10186] pgmajfault 2581 [ 535.552243][T10186] inactive_anon 0 [ 535.552247][T10186] active_anon 0 [ 535.552251][T10186] inactive_file 0 [ 535.552255][T10186] active_file 0 [ 535.552259][T10186] unevictable 0 [ 535.552263][T10186] hierarchical_memory_limit 98304 [ 535.552268][T10186] hierarchical_memsw_limit 9223372036854771712 [ 535.552274][T10186] total_cache 0 [ 535.552278][T10186] total_rss 0 [ 535.552283][T10186] total_rss_huge 0 [ 535.552287][T10186] total_shmem 0 [ 535.552291][T10186] total_mapped_file 0 [ 535.552296][T10186] total_dirty 0 [ 535.552301][T10186] total_writeback 0 [ 535.552305][T10186] total_workingset_refault_anon 4279 [ 535.552310][T10186] total_workingset_refault_file 0 [ 535.552315][T10186] total_swap 4096 [ 535.552320][T10186] total_swapcached 0 [ 535.552324][T10186] total_pgpgin 8724 [ 535.552329][T10186] total_pgpgout 8724 [ 535.552333][T10186] total_pgfault 6455 [ 535.552337][T10186] total_pgmajfault 2581 [ 535.552342][T10186] total_inactive_anon 0 [ 535.552347][T10186] total_active_anon 0 [ 535.552351][T10186] total_inactive_file 0 [ 535.552356][T10186] total_active_file 0 [ 535.552360][T10186] total_unevictable 0 [ 535.552365][T10186] anon_cost 0 [ 535.552369][T10186] file_cost 0 [ 535.552374][T10186] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz1/test,task_memcg=/syz1/test,task=syz.1.1846,pid=10186,uid=0 [ 535.552450][T10186] Memory cgroup out of memory: Killed process 10186 (syz.1.1846) total-vm:45272kB, anon-rss:1360kB, file-rss:1172kB, shmem-rss:0kB, UID:0 pgtables:80kB oom_score_adj:1000 [ 535.794576][ T1061] kworker/u4:9 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 535.797478][ T1061] CPU: 0 UID: 0 PID: 1061 Comm: kworker/u4:9 Not tainted syzkaller #0 PREEMPT(full) [ 535.797500][ T1061] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 535.797510][ T1061] Workqueue: loop0 loop_rootcg_workfn [ 535.797535][ T1061] Call Trace: [ 535.797542][ T1061] [ 535.797548][ T1061] dump_stack_lvl+0xe8/0x150 [ 535.797574][ T1061] dump_header+0xd3/0x4b0 [ 535.797595][ T1061] out_of_memory+0x1021/0x13b0 [ 535.797611][ T1061] ? try_charge_memcg+0xc16/0x15f0 [ 535.797636][ T1061] ? __pfx_out_of_memory+0x10/0x10 [ 535.797650][ T1061] ? do_raw_spin_unlock+0x4d/0x200 [ 535.797671][ T1061] try_charge_memcg+0xccc/0x15f0 [ 535.797701][ T1061] ? __pfx_try_charge_memcg+0x10/0x10 [ 535.797732][ T1061] ? charge_memcg+0x47/0x310 [ 535.797751][ T1061] charge_memcg+0x1dd/0x310 [ 535.797769][ T1061] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 535.797785][ T1061] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 535.797804][ T1061] __swap_cache_alloc_folio+0x4de/0x990 [ 535.797834][ T1061] swap_cluster_readahead+0x4f2/0x640 [ 535.797859][ T1061] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 535.797881][ T1061] ? swap_table_get+0x1e/0x260 [ 535.797904][ T1061] ? swap_cache_get_folio+0x2e7/0x2f0 [ 535.797945][ T1061] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 535.797966][ T1061] shmem_swapin_folio+0xe76/0x1f80 [ 535.797993][ T1061] ? filemap_get_entry+0xcd/0x3f0 [ 535.798014][ T1061] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 535.798033][ T1061] ? __lock_acquire+0x747/0x2de0 [ 535.798057][ T1061] shmem_get_folio_gfp+0x37e/0x1330 [ 535.798086][ T1061] shmem_file_read_iter+0x1b7/0x890 [ 535.798116][ T1061] lo_rw_aio+0xc6d/0xf20 [ 535.798145][ T1061] ? __pfx_lo_rw_aio+0x10/0x10 [ 535.798169][ T1061] ? do_raw_spin_lock+0x12b/0x2f0 [ 535.798189][ T1061] ? kthread_associate_blkcg+0x389/0x660 [ 535.798205][ T1061] ? _raw_spin_unlock_irq+0x23/0x50 [ 535.798224][ T1061] loop_process_work+0x960/0x11c0 [ 535.798255][ T1061] ? __pfx_loop_process_work+0x10/0x10 [ 535.798273][ T1061] ? look_up_lock_class+0x57/0x110 [ 535.798291][ T1061] ? register_lock_class+0x31/0x2e0 [ 535.798310][ T1061] ? __lock_acquire+0x747/0x2de0 [ 535.798331][ T1061] ? update_protect_slice+0x45/0x320 [ 535.798358][ T1061] ? lock_acquire+0x115/0x350 [ 535.798380][ T1061] ? rcu_is_watching+0x16/0xb0 [ 535.798402][ T1061] ? process_scheduled_works+0x97a/0x1630 [ 535.798423][ T1061] process_scheduled_works+0xc3d/0x1630 [ 535.798465][ T1061] ? __pfx_process_scheduled_works+0x10/0x10 [ 535.798489][ T1061] ? assign_work+0x3cf/0x5d0 [ 535.798512][ T1061] worker_thread+0xa47/0xfb0 [ 535.798551][ T1061] kthread+0x38b/0x480 [ 535.798567][ T1061] ? __pfx_worker_thread+0x10/0x10 [ 535.798584][ T1061] ? __pfx_kthread+0x10/0x10 [ 535.798601][ T1061] ret_from_fork+0x514/0xb70 [ 535.798619][ T1061] ? __pfx_ret_from_fork+0x10/0x10 [ 535.798634][ T1061] ? __switch_to+0xc78/0x1410 [ 535.798656][ T1061] ? __pfx_kthread+0x10/0x10 [ 535.798672][ T1061] ret_from_fork_asm+0x1a/0x30 [ 535.798699][ T1061] [ 535.912969][ T1061] memory: usage 96kB, limit 96kB, failcnt 51122 [ 535.912985][ T1061] memory+swap: usage 112kB, limit 9007199254740988kB, failcnt 0 [ 535.912993][ T1061] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 535.913000][ T1061] Memory cgroup stats for /syz0/test: [ 535.913088][ T1061] cache 16384 [ 535.913095][ T1061] rss 0 [ 535.913099][ T1061] rss_huge 0 [ 535.913104][ T1061] shmem 16384 [ 535.913108][ T1061] mapped_file 0 [ 535.913112][ T1061] dirty 0 [ 535.913116][ T1061] writeback 0 [ 535.913120][ T1061] workingset_refault_anon 1449 [ 535.913125][ T1061] workingset_refault_file 7 [ 535.913129][ T1061] swap 16384 [ 535.913134][ T1061] swapcached 0 [ 535.913138][ T1061] pgpgin 2541 [ 535.913143][ T1061] pgpgout 2537 [ 535.913147][ T1061] pgfault 1676 [ 535.913151][ T1061] pgmajfault 640 [ 535.913155][ T1061] inactive_anon 4096 [ 535.913160][ T1061] active_anon 12288 [ 535.913164][ T1061] inactive_file 0 [ 535.913169][ T1061] active_file 0 [ 535.913173][ T1061] unevictable 0 [ 535.913178][ T1061] hierarchical_memory_limit 98304 [ 535.913183][ T1061] hierarchical_memsw_limit 9223372036854771712 [ 535.913189][ T1061] total_cache 16384 [ 535.913193][ T1061] total_rss 0 [ 535.913197][ T1061] total_rss_huge 0 [ 535.913202][ T1061] total_shmem 16384 [ 535.913206][ T1061] total_mapped_file 0 [ 535.913210][ T1061] total_dirty 0 [ 535.913214][ T1061] total_writeback 0 [ 535.913218][ T1061] total_workingset_refault_anon 1449 [ 535.913223][ T1061] total_workingset_refault_file 7 [ 535.913228][ T1061] total_swap 16384 [ 535.913233][ T1061] total_swapcached 0 [ 535.913238][ T1061] total_pgpgin 2541 [ 535.913243][ T1061] total_pgpgout 2537 [ 535.913247][ T1061] total_pgfault 1676 [ 535.913251][ T1061] total_pgmajfault 640 [ 535.913256][ T1061] total_inactive_anon 4096 [ 535.913260][ T1061] total_active_anon 12288 [ 535.913264][ T1061] total_inactive_file 0 [ 535.913268][ T1061] total_active_file 0 [ 535.913273][ T1061] total_unevictable 0 [ 535.913277][ T1061] anon_cost 0 [ 535.913282][ T1061] file_cost 0 [ 535.913286][ T1061] Out of memory and no killable processes... [ 535.913355][ T1061] kernel resource error, dev loop0, sector 12 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 535.913376][ T1061] Buffer I/O error on dev loop0, logical block 6, async page read [ 536.092739][T10189] syz.4.1847 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=1000 [ 536.092764][T10189] CPU: 0 UID: 0 PID: 10189 Comm: syz.4.1847 Not tainted syzkaller #0 PREEMPT(full) [ 536.092778][T10189] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 536.092786][T10189] Call Trace: [ 536.092791][T10189] [ 536.092798][T10189] dump_stack_lvl+0xe8/0x150 [ 536.092821][T10189] dump_header+0xd3/0x4b0 [ 536.092863][T10189] oom_kill_process+0x3ab/0x9e0 [ 536.092883][T10189] out_of_memory+0xfb1/0x13b0 [ 536.092895][T10189] ? try_charge_memcg+0xc16/0x15f0 [ 536.092919][T10189] ? __pfx_out_of_memory+0x10/0x10 [ 536.092931][T10189] ? do_raw_spin_unlock+0x4d/0x200 [ 536.092950][T10189] try_charge_memcg+0xccc/0x15f0 [ 536.092976][T10189] ? __pfx_try_charge_memcg+0x10/0x10 [ 536.092993][T10189] ? rcu_preempt_deferred_qs_irqrestore+0x911/0xb90 [ 536.093022][T10189] __memcg_kmem_charge_page+0x32f/0x530 [ 536.093035][T10189] ? __memcg_kmem_charge_page+0x158/0x530 [ 536.093050][T10189] memcg_charge_kernel_stack+0xf6/0x4c0 [ 536.093064][T10189] dup_task_struct+0x2e1/0xa00 [ 536.093083][T10189] copy_process+0x7ea/0x44b0 [ 536.093099][T10189] ? lock_acquire+0x115/0x350 [ 536.093115][T10189] ? page_table_check_set+0x1a4/0x590 [ 536.093139][T10189] ? lock_acquire+0x115/0x350 [ 536.093160][T10189] ? __pfx_copy_process+0x10/0x10 [ 536.093184][T10189] kernel_clone+0x2d7/0x940 [ 536.093205][T10189] ? __pfx_kernel_clone+0x10/0x10 [ 536.093233][T10189] __se_sys_clone3+0x33c/0x360 [ 536.093252][T10189] ? __pfx___se_sys_clone3+0x10/0x10 [ 536.093278][T10189] ? _copy_to_user+0x8a/0xb0 [ 536.093304][T10189] ? do_user_addr_fault+0xd3f/0x1480 2026/10/27 07:52:15 executed programs: 1844 [ 536.093327][T10189] do_syscall_64+0x166/0x520 [ 536.093344][T10189] ? trace_irq_disable+0x3b/0x140 [ 536.093360][T10189] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 536.093372][T10189] ? clear_bhb_loop+0x70/0xc0 [ 536.093387][T10189] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 536.093398][T10189] RIP: 0033:0x7f5d95b9efc9 [ 536.093411][T10189] Code: 90 b8 01 00 00 00 b9 01 00 00 00 eb ec 0f 1f 40 00 b8 ea ff ff ff 48 85 ff 74 28 48 85 d2 74 23 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 14 74 01 c3 31 ed 4c 89 c7 ff d2 48 89 c7 b8 3c 00 00 [ 536.093421][T10189] RSP: 002b:00007ffee6c5f608 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3 [ 536.093434][T10189] RAX: ffffffffffffffda RBX: 00007f5d95b5a560 RCX: 00007f5d95b9efc9 [ 536.093443][T10189] RDX: 00007f5d95b5a560 RSI: 0000000000000058 RDI: 00007ffee6c5f660 [ 536.093451][T10189] RBP: 00007f5d96a406c0 R08: 00007f5d96a406c0 R09: 00007ffee6c5f747 [ 536.093459][T10189] R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffe8 [ 536.093467][T10189] R13: 000000000000006e R14: 00007ffee6c5f660 R15: 00007ffee6c5f748 [ 536.093486][T10189] [ 536.240734][T10189] memory: usage 96kB, limit 96kB, failcnt 15244 [ 536.240750][T10189] memory+swap: usage 100kB, limit 9007199254740988kB, failcnt 0 [ 536.240757][T10189] kmem: usage 92kB, limit 9007199254740988kB, failcnt 0 [ 536.240763][T10189] Memory cgroup stats for /syz4/test: [ 536.240837][T10189] cache 0 [ 536.240842][T10189] rss 0 [ 536.240845][T10189] rss_huge 0 [ 536.240849][T10189] shmem 0 [ 536.240852][T10189] mapped_file 0 [ 536.240856][T10189] dirty 0 [ 536.240860][T10189] writeback 0 [ 536.240863][T10189] workingset_refault_anon 3848 [ 536.240868][T10189] workingset_refault_file 0 [ 536.240871][T10189] swap 4096 [ 536.240875][T10189] swapcached 4096 [ 536.240879][T10189] pgpgin 8385 [ 536.240883][T10189] pgpgout 8384 [ 536.240886][T10189] pgfault 6359 [ 536.240890][T10189] pgmajfault 2380 [ 536.240894][T10189] inactive_anon 0 [ 536.240897][T10189] active_anon 4096 [ 536.240936][T10189] inactive_file 0 [ 536.240942][T10189] active_file 0 [ 536.240946][T10189] unevictable 0 [ 536.240949][T10189] hierarchical_memory_limit 98304 [ 536.240954][T10189] hierarchical_memsw_limit 9223372036854771712 [ 536.240958][T10189] total_cache 0 [ 536.240962][T10189] total_rss 0 [ 536.240966][T10189] total_rss_huge 0 [ 536.240969][T10189] total_shmem 0 [ 536.240973][T10189] total_mapped_file 0 [ 536.240977][T10189] total_dirty 0 [ 536.240980][T10189] total_writeback 0 [ 536.240984][T10189] total_workingset_refault_anon 3848 [ 536.240988][T10189] total_workingset_refault_file 0 [ 536.240993][T10189] total_swap 4096 [ 536.240996][T10189] total_swapcached 4096 [ 536.241000][T10189] total_pgpgin 8385 [ 536.241004][T10189] total_pgpgout 8384 [ 536.241008][T10189] total_pgfault 6359 [ 536.241012][T10189] total_pgmajfault 2380 [ 536.241016][T10189] total_inactive_anon 0 [ 536.241020][T10189] total_active_anon 4096 [ 536.241023][T10189] total_inactive_file 0 [ 536.241027][T10189] total_active_file 0 [ 536.241031][T10189] total_unevictable 0 [ 536.241035][T10189] anon_cost 0 [ 536.241043][T10189] file_cost 0 [ 536.241047][T10189] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz4/test,task_memcg=/syz4/test,task=syz.4.1847,pid=10189,uid=0 [ 536.241115][T10189] Memory cgroup out of memory: Killed process 10189 (syz.4.1847) total-vm:45272kB, anon-rss:1360kB, file-rss:1112kB, shmem-rss:0kB, UID:0 pgtables:84kB oom_score_adj:1000 [ 536.400909][ T1061] kworker/u4:9 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 536.400939][ T1061] CPU: 0 UID: 0 PID: 1061 Comm: kworker/u4:9 Not tainted syzkaller #0 PREEMPT(full) [ 536.400953][ T1061] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 536.400962][ T1061] Workqueue: loop0 loop_rootcg_workfn [ 536.400984][ T1061] Call Trace: [ 536.400990][ T1061] [ 536.400995][ T1061] dump_stack_lvl+0xe8/0x150 [ 536.401018][ T1061] dump_header+0xd3/0x4b0 [ 536.401037][ T1061] out_of_memory+0x1021/0x13b0 [ 536.401052][ T1061] ? try_charge_memcg+0xc16/0x15f0 [ 536.401074][ T1061] ? __pfx_out_of_memory+0x10/0x10 [ 536.401086][ T1061] ? do_raw_spin_unlock+0x4d/0x200 [ 536.401106][ T1061] try_charge_memcg+0xccc/0x15f0 [ 536.401133][ T1061] ? __pfx_try_charge_memcg+0x10/0x10 [ 536.401183][ T1061] ? charge_memcg+0x47/0x310 [ 536.401200][ T1061] charge_memcg+0x1dd/0x310 [ 536.401215][ T1061] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 536.401230][ T1061] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 536.401248][ T1061] __swap_cache_alloc_folio+0x4de/0x990 [ 536.401275][ T1061] swap_cluster_readahead+0x4f2/0x640 [ 536.401303][ T1061] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 536.401323][ T1061] ? swap_table_get+0x1e/0x260 [ 536.401344][ T1061] ? swap_cache_get_folio+0x2e7/0x2f0 [ 536.401361][ T1061] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 536.401380][ T1061] shmem_swapin_folio+0xe76/0x1f80 [ 536.401404][ T1061] ? filemap_get_entry+0xcd/0x3f0 [ 536.401432][ T1061] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 536.401449][ T1061] ? __lock_acquire+0x747/0x2de0 [ 536.401470][ T1061] shmem_get_folio_gfp+0x37e/0x1330 [ 536.401496][ T1061] shmem_file_read_iter+0x1b7/0x890 [ 536.401521][ T1061] lo_rw_aio+0xc6d/0xf20 [ 536.401549][ T1061] ? __pfx_lo_rw_aio+0x10/0x10 [ 536.401564][ T1061] ? do_raw_spin_lock+0x12b/0x2f0 [ 536.401582][ T1061] ? kthread_associate_blkcg+0x389/0x660 [ 536.401597][ T1061] ? _raw_spin_unlock_irq+0x23/0x50 [ 536.401616][ T1061] loop_process_work+0x960/0x11c0 [ 536.401644][ T1061] ? __pfx_loop_process_work+0x10/0x10 [ 536.401661][ T1061] ? look_up_lock_class+0x57/0x110 [ 536.401678][ T1061] ? register_lock_class+0x31/0x2e0 [ 536.401695][ T1061] ? __lock_acquire+0x747/0x2de0 [ 536.401713][ T1061] ? update_protect_slice+0x45/0x320 [ 536.401738][ T1061] ? lock_acquire+0x115/0x350 [ 536.401757][ T1061] ? rcu_is_watching+0x16/0xb0 [ 536.401777][ T1061] ? process_scheduled_works+0x97a/0x1630 [ 536.401795][ T1061] process_scheduled_works+0xc3d/0x1630 [ 536.401834][ T1061] ? __pfx_process_scheduled_works+0x10/0x10 [ 536.401855][ T1061] ? assign_work+0x3cf/0x5d0 [ 536.401876][ T1061] worker_thread+0xa47/0xfb0 [ 536.401911][ T1061] kthread+0x38b/0x480 [ 536.401925][ T1061] ? __pfx_worker_thread+0x10/0x10 [ 536.401940][ T1061] ? __pfx_kthread+0x10/0x10 [ 536.401954][ T1061] ret_from_fork+0x514/0xb70 [ 536.401969][ T1061] ? __pfx_ret_from_fork+0x10/0x10 [ 536.401982][ T1061] ? __switch_to+0xc78/0x1410 [ 536.402003][ T1061] ? __pfx_kthread+0x10/0x10 [ 536.402017][ T1061] ret_from_fork_asm+0x1a/0x30 [ 536.402042][ T1061] [ 536.421630][ T1061] memory: usage 96kB, limit 96kB, failcnt 51141 [ 536.421647][ T1061] memory+swap: usage 112kB, limit 9007199254740988kB, failcnt 0 [ 536.421657][ T1061] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 536.421664][ T1061] Memory cgroup stats for /syz0/test: [ 536.421748][ T1061] cache 16384 [ 536.421754][ T1061] rss 0 [ 536.421758][ T1061] rss_huge 0 [ 536.421762][ T1061] shmem 16384 [ 536.421767][ T1061] mapped_file 0 [ 536.421771][ T1061] dirty 0 [ 536.421776][ T1061] writeback 0 [ 536.421780][ T1061] workingset_refault_anon 1449 [ 536.421784][ T1061] workingset_refault_file 7 [ 536.421789][ T1061] swap 16384 [ 536.421793][ T1061] swapcached 0 [ 536.421796][ T1061] pgpgin 2541 [ 536.421800][ T1061] pgpgout 2537 [ 536.421805][ T1061] pgfault 1676 [ 536.421810][ T1061] pgmajfault 640 [ 536.421814][ T1061] inactive_anon 4096 [ 536.421819][ T1061] active_anon 12288 [ 536.421824][ T1061] inactive_file 0 [ 536.421829][ T1061] active_file 0 [ 536.421834][ T1061] unevictable 0 [ 536.421839][ T1061] hierarchical_memory_limit 98304 [ 536.421844][ T1061] hierarchical_memsw_limit 9223372036854771712 [ 536.421850][ T1061] total_cache 16384 [ 536.421854][ T1061] total_rss 0 [ 536.421859][ T1061] total_rss_huge 0 [ 536.421863][ T1061] total_shmem 16384 [ 536.421867][ T1061] total_mapped_file 0 [ 536.421871][ T1061] total_dirty 0 [ 536.421874][ T1061] total_writeback 0 [ 536.421877][ T1061] total_workingset_refault_anon 1449 [ 536.421880][ T1061] total_workingset_refault_file 7 [ 536.421885][ T1061] total_swap 16384 [ 536.421890][ T1061] total_swapcached 0 [ 536.421894][ T1061] total_pgpgin 2541 [ 536.421898][ T1061] total_pgpgout 2537 [ 536.421902][ T1061] total_pgfault 1676 [ 536.421906][ T1061] total_pgmajfault 640 [ 536.421910][ T1061] total_inactive_anon 4096 [ 536.421915][ T1061] total_active_anon 12288 [ 536.421920][ T1061] total_inactive_file 0 [ 536.421924][ T1061] total_active_file 0 [ 536.421929][ T1061] total_unevictable 0 [ 536.421934][ T1061] anon_cost 0 [ 536.421938][ T1061] file_cost 0 [ 536.421942][ T1061] Out of memory and no killable processes... [ 536.422000][ T1061] kernel resource error, dev loop0, sector 14 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 536.422022][ T1061] Buffer I/O error on dev loop0, logical block 7, async page read [ 536.768096][ T326] kworker/u4:8 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 536.768125][ T326] CPU: 0 UID: 0 PID: 326 Comm: kworker/u4:8 Not tainted syzkaller #0 PREEMPT(full) [ 536.768139][ T326] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 536.768147][ T326] Workqueue: loop0 loop_workfn [ 536.768168][ T326] Call Trace: [ 536.768174][ T326] [ 536.768179][ T326] dump_stack_lvl+0xe8/0x150 [ 536.768203][ T326] dump_header+0xd3/0x4b0 [ 536.768262][ T326] out_of_memory+0x1021/0x13b0 [ 536.768279][ T326] ? try_charge_memcg+0xc16/0x15f0 [ 536.768304][ T326] ? __pfx_out_of_memory+0x10/0x10 [ 536.768318][ T326] ? do_raw_spin_unlock+0x4d/0x200 [ 536.768337][ T326] try_charge_memcg+0xccc/0x15f0 [ 536.768364][ T326] ? __pfx_try_charge_memcg+0x10/0x10 [ 536.768391][ T326] ? charge_memcg+0x47/0x310 [ 536.768407][ T326] charge_memcg+0x1dd/0x310 [ 536.768422][ T326] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 536.768436][ T326] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 536.768453][ T326] __swap_cache_alloc_folio+0x4de/0x990 [ 536.768480][ T326] swap_cluster_readahead+0x4f2/0x640 [ 536.768502][ T326] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 536.768523][ T326] ? swap_table_get+0x1e/0x260 [ 536.768544][ T326] ? swap_cache_get_folio+0x2e7/0x2f0 [ 536.768561][ T326] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 536.768579][ T326] shmem_swapin_folio+0xe76/0x1f80 [ 536.768605][ T326] ? filemap_get_entry+0xcd/0x3f0 [ 536.768624][ T326] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 536.768646][ T326] ? lock_acquire+0x115/0x350 [ 536.768664][ T326] shmem_get_folio_gfp+0x37e/0x1330 [ 536.768691][ T326] shmem_file_read_iter+0x1b7/0x890 [ 536.768718][ T326] lo_rw_aio+0xc6d/0xf20 [ 536.768740][ T326] ? lock_acquire+0x115/0x350 [ 536.768759][ T326] ? __pfx_lo_rw_aio+0x10/0x10 [ 536.768781][ T326] ? kthread_associate_blkcg+0x4c0/0x660 [ 536.768797][ T326] ? _raw_spin_unlock_irq+0x23/0x50 [ 536.768817][ T326] loop_process_work+0x960/0x11c0 [ 536.768844][ T326] ? __pfx_loop_process_work+0x10/0x10 [ 536.768861][ T326] ? look_up_lock_class+0x57/0x110 [ 536.768876][ T326] ? register_lock_class+0x31/0x2e0 [ 536.768895][ T326] ? __lock_acquire+0x747/0x2de0 [ 536.768917][ T326] ? do_raw_spin_lock+0x12b/0x2f0 [ 536.768936][ T326] ? lock_acquire+0x115/0x350 [ 536.768956][ T326] ? rcu_is_watching+0x16/0xb0 [ 536.768977][ T326] ? process_scheduled_works+0x97a/0x1630 [ 536.768996][ T326] process_scheduled_works+0xc3d/0x1630 [ 536.769034][ T326] ? __pfx_process_scheduled_works+0x10/0x10 [ 536.769057][ T326] ? assign_work+0x3cf/0x5d0 [ 536.769078][ T326] worker_thread+0xa47/0xfb0 [ 536.769105][ T326] ? __kthread_parkme+0x71/0x1f0 [ 536.769123][ T326] kthread+0x38b/0x480 [ 536.769138][ T326] ? __pfx_worker_thread+0x10/0x10 [ 536.769155][ T326] ? __pfx_kthread+0x10/0x10 [ 536.769170][ T326] ret_from_fork+0x514/0xb70 [ 536.769187][ T326] ? __pfx_ret_from_fork+0x10/0x10 [ 536.769200][ T326] ? __switch_to+0xc78/0x1410 [ 536.769222][ T326] ? __pfx_kthread+0x10/0x10 [ 536.769247][ T326] ret_from_fork_asm+0x1a/0x30 [ 536.769272][ T326] [ 536.885919][ T326] memory: usage 96kB, limit 96kB, failcnt 51160 [ 536.885936][ T326] memory+swap: usage 112kB, limit 9007199254740988kB, failcnt 0 [ 536.885945][ T326] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 536.885953][ T326] Memory cgroup stats for /syz0/test: [ 536.886105][ T326] cache 16384 [ 536.886111][ T326] rss 0 [ 536.886116][ T326] rss_huge 0 [ 536.886120][ T326] shmem 16384 [ 536.886124][ T326] mapped_file 0 [ 536.886129][ T326] dirty 0 [ 536.886133][ T326] writeback 0 [ 536.886137][ T326] workingset_refault_anon 1449 [ 536.886142][ T326] workingset_refault_file 7 [ 536.886147][ T326] swap 16384 [ 536.886151][ T326] swapcached 0 [ 536.886156][ T326] pgpgin 2541 [ 536.886160][ T326] pgpgout 2537 [ 536.886165][ T326] pgfault 1676 [ 536.886169][ T326] pgmajfault 640 [ 536.886174][ T326] inactive_anon 4096 [ 536.886179][ T326] active_anon 12288 [ 536.886183][ T326] inactive_file 0 [ 536.886188][ T326] active_file 0 [ 536.886193][ T326] unevictable 0 [ 536.886197][ T326] hierarchical_memory_limit 98304 [ 536.886202][ T326] hierarchical_memsw_limit 9223372036854771712 [ 536.886206][ T326] total_cache 16384 [ 536.886211][ T326] total_rss 0 [ 536.886215][ T326] total_rss_huge 0 [ 536.886219][ T326] total_shmem 16384 [ 536.886223][ T326] total_mapped_file 0 [ 536.886228][ T326] total_dirty 0 [ 536.886232][ T326] total_writeback 0 [ 536.886236][ T326] total_workingset_refault_anon 1449 [ 536.886241][ T326] total_workingset_refault_file 7 [ 536.886245][ T326] total_swap 16384 [ 536.886249][ T326] total_swapcached 0 [ 536.886254][ T326] total_pgpgin 2541 [ 536.886258][ T326] total_pgpgout 2537 [ 536.886263][ T326] total_pgfault 1676 [ 536.886267][ T326] total_pgmajfault 640 [ 536.886272][ T326] total_inactive_anon 4096 [ 536.886277][ T326] total_active_anon 12288 [ 536.886282][ T326] total_inactive_file 0 [ 536.886287][ T326] total_active_file 0 [ 536.886291][ T326] total_unevictable 0 [ 536.886295][ T326] anon_cost 0 [ 536.886300][ T326] file_cost 0 [ 536.886304][ T326] Out of memory and no killable processes... [ 536.886367][ T326] kernel resource error, dev loop0, sector 8 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 536.886419][T10159] Unable to read inode block [ 537.133653][ T1061] kworker/u4:9 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 537.133683][ T1061] CPU: 0 UID: 0 PID: 1061 Comm: kworker/u4:9 Not tainted syzkaller #0 PREEMPT(full) [ 537.133696][ T1061] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 537.133705][ T1061] Workqueue: loop0 loop_rootcg_workfn [ 537.133727][ T1061] Call Trace: [ 537.133733][ T1061] [ 537.133738][ T1061] dump_stack_lvl+0xe8/0x150 [ 537.133760][ T1061] dump_header+0xd3/0x4b0 [ 537.133780][ T1061] out_of_memory+0x1021/0x13b0 [ 537.133794][ T1061] ? try_charge_memcg+0xc16/0x15f0 [ 537.133819][ T1061] ? __pfx_out_of_memory+0x10/0x10 [ 537.133830][ T1061] ? do_raw_spin_unlock+0x4d/0x200 [ 537.133850][ T1061] try_charge_memcg+0xccc/0x15f0 [ 537.133877][ T1061] ? __pfx_try_charge_memcg+0x10/0x10 [ 537.133906][ T1061] ? charge_memcg+0x47/0x310 [ 537.133923][ T1061] charge_memcg+0x1dd/0x310 [ 537.133939][ T1061] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 537.133953][ T1061] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 537.133971][ T1061] __swap_cache_alloc_folio+0x4de/0x990 [ 537.133997][ T1061] swap_cluster_readahead+0x4f2/0x640 [ 537.134019][ T1061] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 537.134041][ T1061] ? swap_table_get+0x1e/0x260 [ 537.134063][ T1061] ? swap_cache_get_folio+0x2e7/0x2f0 [ 537.134081][ T1061] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 537.134102][ T1061] shmem_swapin_folio+0xe76/0x1f80 [ 537.134128][ T1061] ? filemap_get_entry+0xcd/0x3f0 [ 537.134154][ T1061] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 537.134171][ T1061] ? __lock_acquire+0x747/0x2de0 [ 537.134192][ T1061] shmem_get_folio_gfp+0x37e/0x1330 [ 537.134217][ T1061] shmem_file_read_iter+0x1b7/0x890 [ 537.134244][ T1061] lo_rw_aio+0xc6d/0xf20 [ 537.134309][ T1061] ? __pfx_lo_rw_aio+0x10/0x10 [ 537.134325][ T1061] ? do_raw_spin_lock+0x12b/0x2f0 [ 537.134344][ T1061] ? kthread_associate_blkcg+0x389/0x660 [ 537.134358][ T1061] ? _raw_spin_unlock_irq+0x23/0x50 [ 537.134376][ T1061] loop_process_work+0x960/0x11c0 [ 537.134403][ T1061] ? __pfx_loop_process_work+0x10/0x10 [ 537.134419][ T1061] ? look_up_lock_class+0x57/0x110 [ 537.134436][ T1061] ? register_lock_class+0x31/0x2e0 [ 537.134453][ T1061] ? __lock_acquire+0x747/0x2de0 [ 537.134472][ T1061] ? update_protect_slice+0x45/0x320 [ 537.134496][ T1061] ? lock_acquire+0x115/0x350 [ 537.134517][ T1061] ? rcu_is_watching+0x16/0xb0 [ 537.134535][ T1061] ? process_scheduled_works+0x97a/0x1630 [ 537.134553][ T1061] process_scheduled_works+0xc3d/0x1630 [ 537.134590][ T1061] ? __pfx_process_scheduled_works+0x10/0x10 [ 537.134622][ T1061] ? assign_work+0x3cf/0x5d0 [ 537.134640][ T1061] worker_thread+0xa47/0xfb0 [ 537.134664][ T1061] kthread+0x38b/0x480 [ 537.134673][ T1061] ? __pfx_worker_thread+0x10/0x10 [ 537.134687][ T1061] ? __pfx_kthread+0x10/0x10 [ 537.134700][ T1061] ret_from_fork+0x514/0xb70 [ 537.134717][ T1061] ? __pfx_ret_from_fork+0x10/0x10 [ 537.134730][ T1061] ? __switch_to+0xc78/0x1410 [ 537.134749][ T1061] ? __pfx_kthread+0x10/0x10 [ 537.134763][ T1061] ret_from_fork_asm+0x1a/0x30 [ 537.134820][ T1061] [ 537.193064][ T1061] memory: usage 96kB, limit 96kB, failcnt 51182 [ 537.193081][ T1061] memory+swap: usage 108kB, limit 9007199254740988kB, failcnt 0 [ 537.193090][ T1061] kmem: usage 76kB, limit 9007199254740988kB, failcnt 0 [ 537.193098][ T1061] Memory cgroup stats for /syz0/test: [ 537.193190][ T1061] cache 20480 [ 537.193197][ T1061] rss 0 [ 537.193202][ T1061] rss_huge 0 [ 537.193213][ T1061] shmem 20480 [ 537.193218][ T1061] mapped_file 0 [ 537.193223][ T1061] dirty 0 [ 537.193227][ T1061] writeback 0 [ 537.193232][ T1061] workingset_refault_anon 1450 [ 537.193238][ T1061] workingset_refault_file 7 [ 537.193243][ T1061] swap 12288 [ 537.193248][ T1061] swapcached 0 [ 537.193253][ T1061] pgpgin 2542 [ 537.193258][ T1061] pgpgout 2537 [ 537.193262][ T1061] pgfault 1677 [ 537.193267][ T1061] pgmajfault 640 [ 537.193272][ T1061] inactive_anon 12288 [ 537.193277][ T1061] active_anon 8192 [ 537.193282][ T1061] inactive_file 0 [ 537.193287][ T1061] active_file 0 [ 537.193292][ T1061] unevictable 0 [ 537.193298][ T1061] hierarchical_memory_limit 98304 [ 537.193304][ T1061] hierarchical_memsw_limit 9223372036854771712 [ 537.193310][ T1061] total_cache 20480 [ 537.193315][ T1061] total_rss 0 [ 537.193320][ T1061] total_rss_huge 0 [ 537.193325][ T1061] total_shmem 20480 [ 537.193330][ T1061] total_mapped_file 0 [ 537.193334][ T1061] total_dirty 0 [ 537.193339][ T1061] total_writeback 0 [ 537.193344][ T1061] total_workingset_refault_anon 1450 [ 537.193350][ T1061] total_workingset_refault_file 7 [ 537.193355][ T1061] total_swap 12288 [ 537.193360][ T1061] total_swapcached 0 [ 537.193365][ T1061] total_pgpgin 2542 [ 537.193370][ T1061] total_pgpgout 2537 [ 537.193375][ T1061] total_pgfault 1677 [ 537.193380][ T1061] total_pgmajfault 640 [ 537.193385][ T1061] total_inactive_anon 12288 [ 537.193391][ T1061] total_active_anon 8192 [ 537.193396][ T1061] total_inactive_file 0 [ 537.193401][ T1061] total_active_file 0 [ 537.193406][ T1061] total_unevictable 0 [ 537.193411][ T1061] anon_cost 0 [ 537.193415][ T1061] file_cost 0 [ 537.193421][ T1061] Out of memory and no killable processes... [ 537.193478][ T1061] kernel resource error, dev loop0, sector 32 op 0x0:(READ) flags 0x880700 phys_seg 1 prio class 2 [ 537.487031][ T78] kworker/u4:5 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 537.487059][ T78] CPU: 0 UID: 0 PID: 78 Comm: kworker/u4:5 Not tainted syzkaller #0 PREEMPT(full) [ 537.487073][ T78] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 537.487081][ T78] Workqueue: loop0 loop_rootcg_workfn [ 537.487104][ T78] Call Trace: [ 537.487110][ T78] [ 537.487116][ T78] dump_stack_lvl+0xe8/0x150 [ 537.487138][ T78] dump_header+0xd3/0x4b0 [ 537.487179][ T78] out_of_memory+0x1021/0x13b0 [ 537.487196][ T78] ? try_charge_memcg+0xc16/0x15f0 [ 537.487226][ T78] ? __pfx_out_of_memory+0x10/0x10 [ 537.487238][ T78] ? do_raw_spin_unlock+0x4d/0x200 [ 537.487259][ T78] try_charge_memcg+0xccc/0x15f0 [ 537.487286][ T78] ? __pfx_try_charge_memcg+0x10/0x10 [ 537.487315][ T78] ? charge_memcg+0x47/0x310 [ 537.487333][ T78] charge_memcg+0x1dd/0x310 [ 537.487348][ T78] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 537.487362][ T78] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 537.487379][ T78] __swap_cache_alloc_folio+0x4de/0x990 [ 537.487407][ T78] swap_cluster_readahead+0x4f2/0x640 [ 537.487434][ T78] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 537.487458][ T78] ? swap_table_get+0x1e/0x260 [ 537.487479][ T78] ? swap_cache_get_folio+0x2e7/0x2f0 [ 537.487496][ T78] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 537.487515][ T78] shmem_swapin_folio+0xe76/0x1f80 [ 537.487538][ T78] ? filemap_get_entry+0xcd/0x3f0 [ 537.487558][ T78] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 537.487579][ T78] ? __lock_acquire+0x747/0x2de0 [ 537.487599][ T78] shmem_get_folio_gfp+0x37e/0x1330 [ 537.487625][ T78] shmem_file_read_iter+0x1b7/0x890 [ 537.487652][ T78] lo_rw_aio+0xc6d/0xf20 [ 537.487673][ T78] ? __pfx_lo_rw_aio+0x10/0x10 [ 537.487682][ T78] ? do_raw_spin_lock+0x12b/0x2f0 [ 537.487693][ T78] ? kthread_associate_blkcg+0x389/0x660 [ 537.487705][ T78] ? _raw_spin_unlock_irq+0x23/0x50 [ 537.487718][ T78] loop_process_work+0x960/0x11c0 [ 537.487736][ T78] ? __pfx_loop_process_work+0x10/0x10 [ 537.487747][ T78] ? look_up_lock_class+0x57/0x110 [ 537.487763][ T78] ? register_lock_class+0x31/0x2e0 [ 537.487780][ T78] ? __lock_acquire+0x747/0x2de0 [ 537.487799][ T78] ? update_protect_slice+0x45/0x320 [ 537.487824][ T78] ? lock_acquire+0x115/0x350 [ 537.487841][ T78] ? rcu_is_watching+0x16/0xb0 [ 537.487859][ T78] ? process_scheduled_works+0x97a/0x1630 [ 537.487877][ T78] process_scheduled_works+0xc3d/0x1630 [ 537.487913][ T78] ? __pfx_process_scheduled_works+0x10/0x10 [ 537.487936][ T78] ? assign_work+0x3cf/0x5d0 [ 537.487955][ T78] worker_thread+0xa47/0xfb0 [ 537.487983][ T78] ? __kthread_parkme+0x71/0x1f0 [ 537.488002][ T78] kthread+0x38b/0x480 [ 537.488017][ T78] ? __pfx_worker_thread+0x10/0x10 [ 537.488034][ T78] ? __pfx_kthread+0x10/0x10 [ 537.488048][ T78] ret_from_fork+0x514/0xb70 [ 537.488065][ T78] ? __pfx_ret_from_fork+0x10/0x10 [ 537.488079][ T78] ? __switch_to+0xc78/0x1410 [ 537.488099][ T78] ? __pfx_kthread+0x10/0x10 [ 537.488113][ T78] ret_from_fork_asm+0x1a/0x30 [ 537.488136][ T78] [ 537.616058][ T78] memory: usage 96kB, limit 96kB, failcnt 51201 [ 537.616076][ T78] memory+swap: usage 108kB, limit 9007199254740988kB, failcnt 0 [ 537.616084][ T78] kmem: usage 76kB, limit 9007199254740988kB, failcnt 0 [ 537.616092][ T78] Memory cgroup stats for /syz0/test: [ 537.616179][ T78] cache 20480 [ 537.616185][ T78] rss 0 [ 537.616190][ T78] rss_huge 0 [ 537.616194][ T78] shmem 20480 [ 537.616198][ T78] mapped_file 0 [ 537.616203][ T78] dirty 0 [ 537.616207][ T78] writeback 0 [ 537.616223][ T78] workingset_refault_anon 1450 [ 537.616228][ T78] workingset_refault_file 7 [ 537.616233][ T78] swap 12288 [ 537.616237][ T78] swapcached 0 [ 537.616241][ T78] pgpgin 2542 [ 537.616245][ T78] pgpgout 2537 [ 537.616249][ T78] pgfault 1677 [ 537.616253][ T78] pgmajfault 640 [ 537.616257][ T78] inactive_anon 16384 [ 537.616262][ T78] active_anon 4096 [ 537.616266][ T78] inactive_file 0 [ 537.616270][ T78] active_file 0 [ 537.616275][ T78] unevictable 0 [ 537.616286][ T78] hierarchical_memory_limit 98304 [ 537.616290][ T78] hierarchical_memsw_limit 9223372036854771712 [ 537.616296][ T78] total_cache 20480 [ 537.616300][ T78] total_rss 0 [ 537.616304][ T78] total_rss_huge 0 [ 537.616308][ T78] total_shmem 20480 [ 537.616312][ T78] total_mapped_file 0 [ 537.616317][ T78] total_dirty 0 [ 537.616321][ T78] total_writeback 0 [ 537.616325][ T78] total_workingset_refault_anon 1450 [ 537.616330][ T78] total_workingset_refault_file 7 [ 537.616335][ T78] total_swap 12288 [ 537.616339][ T78] total_swapcached 0 [ 537.616343][ T78] total_pgpgin 2542 [ 537.616347][ T78] total_pgpgout 2537 [ 537.616351][ T78] total_pgfault 1677 [ 537.616356][ T78] total_pgmajfault 640 [ 537.616360][ T78] total_inactive_anon 16384 [ 537.616364][ T78] total_active_anon 4096 [ 537.616369][ T78] total_inactive_file 0 [ 537.616374][ T78] total_active_file 0 [ 537.616378][ T78] total_unevictable 0 [ 537.616382][ T78] anon_cost 0 [ 537.616386][ T78] file_cost 0 [ 537.616391][ T78] Out of memory and no killable processes... [ 537.616536][ T78] kernel resource error, dev loop0, sector 32 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 537.616558][ T78] Buffer I/O error on dev loop0, logical block 16, async page read [ 537.975793][T10202] loop0: detected capacity change from 0 to 64 [ 538.131649][ T78] kworker/u4:5 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 538.131680][ T78] CPU: 0 UID: 0 PID: 78 Comm: kworker/u4:5 Not tainted syzkaller #0 PREEMPT(full) [ 538.131694][ T78] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 538.131703][ T78] Workqueue: loop0 loop_workfn [ 538.131725][ T78] Call Trace: [ 538.131730][ T78] [ 538.131736][ T78] dump_stack_lvl+0xe8/0x150 [ 538.131759][ T78] dump_header+0xd3/0x4b0 [ 538.131778][ T78] oom_kill_process+0x3ab/0x9e0 [ 538.131801][ T78] out_of_memory+0xfb1/0x13b0 [ 538.131814][ T78] ? try_charge_memcg+0xc16/0x15f0 [ 538.131838][ T78] ? __pfx_out_of_memory+0x10/0x10 [ 538.131851][ T78] ? do_raw_spin_unlock+0x4d/0x200 [ 538.131870][ T78] try_charge_memcg+0xccc/0x15f0 [ 538.131896][ T78] ? __pfx_try_charge_memcg+0x10/0x10 [ 538.131925][ T78] ? charge_memcg+0x47/0x310 [ 538.131941][ T78] charge_memcg+0x1dd/0x310 [ 538.131955][ T78] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 538.131969][ T78] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 538.131986][ T78] __swap_cache_alloc_folio+0x4de/0x990 [ 538.132013][ T78] swap_cluster_readahead+0x4f2/0x640 [ 538.132035][ T78] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 538.132055][ T78] ? swap_table_get+0x1e/0x260 [ 538.132077][ T78] ? swap_cache_get_folio+0x2e7/0x2f0 [ 538.132093][ T78] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 538.132112][ T78] shmem_swapin_folio+0xe76/0x1f80 [ 538.132136][ T78] ? filemap_get_entry+0xcd/0x3f0 [ 538.132155][ T78] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 538.132197][ T78] ? lock_acquire+0x115/0x350 [ 538.132218][ T78] shmem_get_folio_gfp+0x37e/0x1330 [ 538.132242][ T78] shmem_file_read_iter+0x1b7/0x890 [ 538.132271][ T78] lo_rw_aio+0xc6d/0xf20 [ 538.132291][ T78] ? lock_acquire+0x115/0x350 [ 538.132308][ T78] ? __pfx_lo_rw_aio+0x10/0x10 [ 538.132328][ T78] ? kthread_associate_blkcg+0x4c0/0x660 [ 538.132343][ T78] ? _raw_spin_unlock_irq+0x23/0x50 [ 538.132361][ T78] loop_process_work+0x960/0x11c0 [ 538.132390][ T78] ? __pfx_loop_process_work+0x10/0x10 [ 538.132403][ T78] ? look_up_lock_class+0x57/0x110 [ 538.132414][ T78] ? register_lock_class+0x31/0x2e0 [ 538.132425][ T78] ? __lock_acquire+0x747/0x2de0 [ 538.132436][ T78] ? trace_hrtimer_start+0x82/0x200 [ 538.132448][ T78] ? do_raw_spin_lock+0x12b/0x2f0 [ 538.132460][ T78] ? lock_acquire+0x115/0x350 [ 538.132472][ T78] ? rcu_is_watching+0x16/0xb0 [ 538.132485][ T78] ? process_scheduled_works+0x97a/0x1630 [ 538.132500][ T78] process_scheduled_works+0xc3d/0x1630 [ 538.132536][ T78] ? __pfx_process_scheduled_works+0x10/0x10 [ 538.132558][ T78] ? assign_work+0x3cf/0x5d0 [ 538.132577][ T78] worker_thread+0xa47/0xfb0 [ 538.132604][ T78] ? __kthread_parkme+0x71/0x1f0 [ 538.132622][ T78] kthread+0x38b/0x480 [ 538.132636][ T78] ? __pfx_worker_thread+0x10/0x10 [ 538.132652][ T78] ? __pfx_kthread+0x10/0x10 [ 538.132667][ T78] ret_from_fork+0x514/0xb70 [ 538.132685][ T78] ? __pfx_ret_from_fork+0x10/0x10 [ 538.132698][ T78] ? __switch_to+0xc78/0x1410 [ 538.132718][ T78] ? __pfx_kthread+0x10/0x10 [ 538.132732][ T78] ret_from_fork_asm+0x1a/0x30 [ 538.132756][ T78] [ 538.138264][ T78] memory: usage 96kB, limit 96kB, failcnt 51298 [ 538.138281][ T78] memory+swap: usage 120kB, limit 9007199254740988kB, failcnt 0 [ 538.138289][ T78] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 538.138296][ T78] Memory cgroup stats for /syz0/test: [ 538.138378][ T78] cache 12288 [ 538.138385][ T78] rss 0 [ 538.138389][ T78] rss_huge 0 [ 538.138394][ T78] shmem 8192 [ 538.138398][ T78] mapped_file 0 [ 538.138403][ T78] dirty 0 [ 538.138407][ T78] writeback 0 [ 538.138412][ T78] workingset_refault_anon 1465 [ 538.138416][ T78] workingset_refault_file 7 [ 538.138421][ T78] swap 24576 [ 538.138425][ T78] swapcached 4096 [ 538.138430][ T78] pgpgin 2572 [ 538.138435][ T78] pgpgout 2568 [ 538.138439][ T78] pgfault 1696 [ 538.138443][ T78] pgmajfault 645 [ 538.138448][ T78] inactive_anon 12288 [ 538.138452][ T78] active_anon 0 [ 538.138456][ T78] inactive_file 0 [ 538.138461][ T78] active_file 4096 [ 538.138465][ T78] unevictable 0 [ 538.138470][ T78] hierarchical_memory_limit 98304 [ 538.138475][ T78] hierarchical_memsw_limit 9223372036854771712 [ 538.138480][ T78] total_cache 12288 [ 538.138485][ T78] total_rss 0 [ 538.138489][ T78] total_rss_huge 0 [ 538.138493][ T78] total_shmem 8192 [ 538.138498][ T78] total_mapped_file 0 [ 538.138502][ T78] total_dirty 0 [ 538.138506][ T78] total_writeback 0 [ 538.138511][ T78] total_workingset_refault_anon 1465 [ 538.138516][ T78] total_workingset_refault_file 7 [ 538.138521][ T78] total_swap 24576 [ 538.138525][ T78] total_swapcached 4096 [ 538.138529][ T78] total_pgpgin 2572 [ 538.138533][ T78] total_pgpgout 2568 [ 538.138538][ T78] total_pgfault 1696 [ 538.138542][ T78] total_pgmajfault 645 [ 538.138547][ T78] total_inactive_anon 12288 [ 538.138552][ T78] total_active_anon 0 [ 538.138556][ T78] total_inactive_file 0 [ 538.138561][ T78] total_active_file 4096 [ 538.138565][ T78] total_unevictable 0 [ 538.138570][ T78] anon_cost 0 [ 538.138573][ T78] file_cost 0 [ 538.138578][ T78] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz0/test,task_memcg=/syz0/test,task=syz.0.1852,pid=10200,uid=0 [ 538.138726][ T78] Memory cgroup out of memory: Killed process 10200 (syz.0.1852) total-vm:45272kB, anon-rss:1364kB, file-rss:1300kB, shmem-rss:0kB, UID:0 pgtables:80kB oom_score_adj:1000 [ 540.264224][ T27] oom_reaper: reaped process 10200 (syz.0.1852), now anon-rss:0kB, file-rss:72kB, shmem-rss:0kB [ 540.371130][ T326] kworker/u4:8 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 540.371157][ T326] CPU: 0 UID: 0 PID: 326 Comm: kworker/u4:8 Not tainted syzkaller #0 PREEMPT(full) [ 540.371167][ T326] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 540.371173][ T326] Workqueue: loop0 loop_rootcg_workfn [ 540.371189][ T326] Call Trace: [ 540.371194][ T326] [ 540.371198][ T326] dump_stack_lvl+0xe8/0x150 [ 540.371213][ T326] dump_header+0xd3/0x4b0 [ 540.371225][ T326] out_of_memory+0x1021/0x13b0 [ 540.371235][ T326] ? try_charge_memcg+0xc16/0x15f0 [ 540.371251][ T326] ? __pfx_out_of_memory+0x10/0x10 [ 540.371258][ T326] ? do_raw_spin_unlock+0x4d/0x200 [ 540.371271][ T326] try_charge_memcg+0xccc/0x15f0 [ 540.371288][ T326] ? __pfx_try_charge_memcg+0x10/0x10 [ 540.371306][ T326] ? charge_memcg+0x47/0x310 [ 540.371316][ T326] charge_memcg+0x1dd/0x310 [ 540.371326][ T326] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 540.371335][ T326] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 540.371351][ T326] __swap_cache_alloc_folio+0x4de/0x990 [ 540.371377][ T326] swap_cluster_readahead+0x4f2/0x640 [ 540.371400][ T326] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 540.371419][ T326] ? swap_table_get+0x1e/0x260 [ 540.371432][ T326] ? swap_cache_get_folio+0x2e7/0x2f0 [ 540.371443][ T326] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 540.371456][ T326] shmem_swapin_folio+0xe76/0x1f80 [ 540.371471][ T326] ? filemap_get_entry+0xcd/0x3f0 [ 540.371483][ T326] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 540.371495][ T326] ? lock_acquire+0x115/0x350 [ 540.371508][ T326] shmem_get_folio_gfp+0x37e/0x1330 [ 540.371523][ T326] shmem_write_begin+0x16c/0x330 [ 540.371535][ T326] generic_perform_write+0x2d5/0x8e0 [ 540.371550][ T326] ? __pfx_generic_perform_write+0x10/0x10 [ 540.371561][ T326] ? __mark_inode_dirty+0x4e7/0x13b0 [ 540.371570][ T326] ? preempt_count_add+0x6a/0x140 [ 540.371578][ T326] ? mnt_put_write_access_file+0xbc/0x100 [ 540.371590][ T326] ? file_update_time_flags+0x3ab/0x440 [ 540.371600][ T326] shmem_file_write_iter+0xf8/0x120 [ 540.371611][ T326] lo_rw_aio+0xc6d/0xf20 [ 540.371627][ T326] ? __pfx_lo_rw_aio+0x10/0x10 [ 540.371656][ T326] ? do_raw_spin_lock+0x12b/0x2f0 [ 540.371667][ T326] ? kthread_associate_blkcg+0x389/0x660 [ 540.371677][ T326] ? _raw_spin_unlock_irq+0x23/0x50 [ 540.371688][ T326] loop_process_work+0x621/0x11c0 [ 540.371711][ T326] ? __pfx_loop_process_work+0x10/0x10 [ 540.371727][ T326] ? look_up_lock_class+0x57/0x110 [ 540.371743][ T326] ? register_lock_class+0x31/0x2e0 [ 540.371759][ T326] ? __lock_acquire+0x747/0x2de0 [ 540.371771][ T326] ? trace_hrtimer_start+0x82/0x200 [ 540.371783][ T326] ? do_raw_spin_lock+0x12b/0x2f0 [ 540.371800][ T326] ? lock_acquire+0x115/0x350 [ 540.371820][ T326] ? rcu_is_watching+0x16/0xb0 [ 540.371840][ T326] ? process_scheduled_works+0x97a/0x1630 [ 540.371858][ T326] process_scheduled_works+0xc3d/0x1630 [ 540.371897][ T326] ? __pfx_process_scheduled_works+0x10/0x10 [ 540.371919][ T326] ? assign_work+0x3cf/0x5d0 [ 540.371940][ T326] worker_thread+0xa47/0xfb0 [ 540.371968][ T326] ? __kthread_parkme+0x71/0x1f0 [ 540.371986][ T326] kthread+0x38b/0x480 [ 540.372001][ T326] ? __pfx_worker_thread+0x10/0x10 [ 540.372017][ T326] ? __pfx_kthread+0x10/0x10 [ 540.372032][ T326] ret_from_fork+0x514/0xb70 [ 540.372049][ T326] ? __pfx_ret_from_fork+0x10/0x10 [ 540.372063][ T326] ? __switch_to+0xc78/0x1410 [ 540.372084][ T326] ? __pfx_kthread+0x10/0x10 [ 540.372099][ T326] ret_from_fork_asm+0x1a/0x30 [ 540.372123][ T326] [ 540.376438][ T326] memory: usage 96kB, limit 96kB, failcnt 52207 [ 540.376451][ T326] memory+swap: usage 120kB, limit 9007199254740988kB, failcnt 0 [ 540.376459][ T326] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 540.376467][ T326] Memory cgroup stats for /syz0/test: [ 540.376549][ T326] cache 16384 [ 540.376555][ T326] rss 0 [ 540.376560][ T326] rss_huge 0 [ 540.376564][ T326] shmem 8192 [ 540.376568][ T326] mapped_file 0 [ 540.376573][ T326] dirty 0 [ 540.376578][ T326] writeback 4096 [ 540.376582][ T326] workingset_refault_anon 1469 [ 540.376588][ T326] workingset_refault_file 7 [ 540.376593][ T326] swap 24576 [ 540.376597][ T326] swapcached 0 [ 540.376601][ T326] pgpgin 2577 [ 540.376606][ T326] pgpgout 2573 [ 540.376610][ T326] pgfault 1697 [ 540.376615][ T326] pgmajfault 645 [ 540.376619][ T326] inactive_anon 0 [ 540.376623][ T326] active_anon 8192 [ 540.376626][ T326] inactive_file 0 [ 540.376629][ T326] active_file 8192 [ 540.376632][ T326] unevictable 0 [ 540.376635][ T326] hierarchical_memory_limit 98304 [ 540.376638][ T326] hierarchical_memsw_limit 9223372036854771712 [ 540.376641][ T326] total_cache 16384 [ 540.376644][ T326] total_rss 0 [ 540.376648][ T326] total_rss_huge 0 [ 540.376652][ T326] total_shmem 8192 [ 540.376655][ T326] total_mapped_file 0 [ 540.376658][ T326] total_dirty 0 [ 540.376661][ T326] total_writeback 4096 [ 540.376664][ T326] total_workingset_refault_anon 1469 [ 540.376667][ T326] total_workingset_refault_file 7 [ 540.376670][ T326] total_swap 24576 [ 540.376673][ T326] total_swapcached 0 [ 540.376676][ T326] total_pgpgin 2577 [ 540.376680][ T326] total_pgpgout 2573 [ 540.376684][ T326] total_pgfault 1697 [ 540.376689][ T326] total_pgmajfault 645 [ 540.376693][ T326] total_inactive_anon 0 [ 540.376698][ T326] total_active_anon 8192 [ 540.376702][ T326] total_inactive_file 0 [ 540.376706][ T326] total_active_file 8192 [ 540.376711][ T326] total_unevictable 0 [ 540.376715][ T326] anon_cost 0 [ 540.376720][ T326] file_cost 0 [ 540.376725][ T326] Out of memory and no killable processes... [ 540.376762][ T326] kernel resource error, dev loop0, sector 2 op 0x1:(WRITE) flags 0x800000 phys_seg 1 prio class 2 [ 540.376781][ T326] Buffer I/O error on dev loop0, logical block 1, lost async page write [ 541.022647][T10240] loop0: detected capacity change from 0 to 64 [ 541.125773][T10240] syz.0.1870 invoked oom-killer: gfp_mask=0x408c40(GFP_NOFS|__GFP_NOFAIL|__GFP_ACCOUNT), order=0, oom_score_adj=1000 [ 541.125806][T10240] CPU: 0 UID: 0 PID: 10240 Comm: syz.0.1870 Not tainted syzkaller #0 PREEMPT(full) [ 541.125821][T10240] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 541.125828][T10240] Call Trace: [ 541.125834][T10240] [ 541.125840][T10240] dump_stack_lvl+0xe8/0x150 [ 541.125865][T10240] dump_header+0xd3/0x4b0 [ 541.125885][T10240] oom_kill_process+0x3ab/0x9e0 [ 541.125903][T10240] out_of_memory+0xfb1/0x13b0 [ 541.125916][T10240] ? try_charge_memcg+0xc16/0x15f0 [ 541.125940][T10240] ? __pfx_out_of_memory+0x10/0x10 [ 541.125953][T10240] ? do_raw_spin_unlock+0x4d/0x200 [ 541.125972][T10240] try_charge_memcg+0xccc/0x15f0 [ 541.126000][T10240] ? __pfx_try_charge_memcg+0x10/0x10 [ 541.126019][T10240] ? percpu_ref_tryget+0x15/0x180 [ 541.126042][T10240] ? __obj_cgroup_charge+0x36/0x2d0 [ 541.126058][T10240] __obj_cgroup_charge+0x20a/0x2d0 [ 541.126089][T10240] ? __obj_cgroup_charge+0x36/0x2d0 [ 541.126111][T10240] __memcg_slab_post_alloc_hook+0x772/0xdb0 [ 541.126137][T10240] kmem_cache_alloc_lru_noprof+0x34c/0x5f0 [ 541.126157][T10240] ? kmem_cache_alloc_lru_noprof+0x14e/0x5f0 [ 541.126174][T10240] ? xas_nomem+0x14a/0x1f0 [ 541.126190][T10240] ? xas_nomem+0x14a/0x1f0 [ 541.126209][T10240] xas_nomem+0x14a/0x1f0 [ 541.126226][T10240] __filemap_add_folio+0xd25/0x13c0 [ 541.126251][T10240] ? __pfx___filemap_add_folio+0x10/0x10 [ 541.126266][T10240] ? __pfx_workingset_update_node+0x10/0x10 [ 541.126279][T10240] ? percpu_ref_put+0x19/0x180 [ 541.126296][T10240] ? percpu_ref_put+0xf9/0x180 [ 541.126316][T10240] filemap_add_folio+0x251/0x4e0 [ 541.126333][T10240] __filemap_get_folio_mpol+0x4fa/0xff0 [ 541.126353][T10240] bdev_getblk+0x1ec/0x670 [ 541.126377][T10240] __bread_gfp+0x89/0x370 [ 541.126395][T10240] minix_V1_raw_inode+0x123/0x1c0 [ 541.126412][T10240] minix_iget+0x1dd/0x1810 [ 541.126425][T10240] ? __pfx_wake_bit_function+0x10/0x10 [ 541.126445][T10240] ? __pfx_minix_iget+0x10/0x10 [ 541.126460][T10240] ? __bread_gfp+0x224/0x370 [ 541.126477][T10240] ? __bread_gfp+0x2be/0x370 [ 541.126495][T10240] minix_fill_super+0x11c4/0x1a90 [ 541.126525][T10240] get_tree_bdev_flags+0x430/0x4f0 [ 541.126549][T10240] ? __pfx_minix_fill_super+0x10/0x10 [ 541.126563][T10240] ? __pfx_get_tree_bdev_flags+0x10/0x10 [ 541.126585][T10240] vfs_get_tree+0x92/0x2a0 [ 541.126599][T10240] do_new_mount+0x325/0xb00 [ 541.126621][T10240] ? __pfx_do_new_mount+0x10/0x10 [ 541.126640][T10240] ? ns_capable+0x84/0xe0 [ 541.126660][T10240] ? path_mount+0x647/0x1050 [ 541.126678][T10240] ? user_path_at+0xd4/0x160 [ 541.126692][T10240] __se_sys_mount+0x31d/0x420 [ 541.126714][T10240] ? __pfx___se_sys_mount+0x10/0x10 [ 541.126762][T10240] ? __x64_sys_mount+0x20/0xc0 [ 541.126784][T10240] do_syscall_64+0x166/0x520 [ 541.126800][T10240] ? trace_irq_disable+0x3b/0x140 [ 541.126816][T10240] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 541.126830][T10240] ? clear_bhb_loop+0x70/0xc0 [ 541.126846][T10240] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 541.126858][T10240] RIP: 0033:0x7fee2fd9f44a [ 541.126873][T10240] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 541.126882][T10240] RSP: 002b:00007fee30c25e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 541.126897][T10240] RAX: ffffffffffffffda RBX: 00007fee30c25ee0 RCX: 00007fee2fd9f44a [ 541.126906][T10240] RDX: 00002000000002c0 RSI: 0000200000000300 RDI: 00007fee30c25ea0 [ 541.126915][T10240] RBP: 00002000000002c0 R08: 00007fee30c25ee0 R09: 0000000000008010 [ 541.126923][T10240] R10: 0000000000008010 R11: 0000000000000246 R12: 0000200000000300 [ 541.126932][T10240] R13: 00007fee30c25ea0 R14: 000000000000018a R15: 0000200000000440 [ 541.126952][T10240] [ 541.220685][T10240] memory: usage 96kB, limit 96kB, failcnt 52288 [ 541.220699][T10240] memory+swap: usage 120kB, limit 9007199254740988kB, failcnt 0 [ 541.220706][T10240] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 541.220713][T10240] Memory cgroup stats for /syz0/test: [ 541.220788][T10240] cache 12288 [ 541.220793][T10240] rss 0 [ 541.220797][T10240] rss_huge 0 [ 541.220800][T10240] shmem 8192 [ 541.220804][T10240] mapped_file 0 [ 541.220808][T10240] dirty 0 [ 541.220811][T10240] writeback 0 [ 541.220814][T10240] workingset_refault_anon 1480 [ 541.220818][T10240] workingset_refault_file 7 [ 541.220822][T10240] swap 24576 [ 541.220826][T10240] swapcached 0 [ 541.220829][T10240] pgpgin 2603 [ 541.220832][T10240] pgpgout 2599 [ 541.220836][T10240] pgfault 1716 [ 541.220839][T10240] pgmajfault 651 [ 541.220843][T10240] inactive_anon 4096 [ 541.220847][T10240] active_anon 4096 [ 541.220850][T10240] inactive_file 0 [ 541.220854][T10240] active_file 4096 [ 541.220857][T10240] unevictable 0 [ 541.220861][T10240] hierarchical_memory_limit 98304 [ 541.220865][T10240] hierarchical_memsw_limit 9223372036854771712 [ 541.220870][T10240] total_cache 12288 [ 541.220874][T10240] total_rss 0 [ 541.220877][T10240] total_rss_huge 0 [ 541.220881][T10240] total_shmem 8192 [ 541.220885][T10240] total_mapped_file 0 [ 541.220889][T10240] total_dirty 0 [ 541.220892][T10240] total_writeback 0 [ 541.220896][T10240] total_workingset_refault_anon 1480 [ 541.220900][T10240] total_workingset_refault_file 7 [ 541.220904][T10240] total_swap 24576 [ 541.220908][T10240] total_swapcached 0 [ 541.220912][T10240] total_pgpgin 2603 [ 541.220916][T10240] total_pgpgout 2599 [ 541.220919][T10240] total_pgfault 1716 [ 541.220923][T10240] total_pgmajfault 651 [ 541.220927][T10240] total_inactive_anon 4096 [ 541.220930][T10240] total_active_anon 4096 [ 541.220934][T10240] total_inactive_file 0 [ 541.220938][T10240] total_active_file 4096 [ 541.220942][T10240] total_unevictable 0 [ 541.220946][T10240] anon_cost 0 [ 541.220949][T10240] file_cost 0 [ 541.220953][T10240] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz0/test,task_memcg=/syz0/test,task=syz.0.1870,pid=10239,uid=0 [ 541.221020][T10240] Memory cgroup out of memory: Killed process 10239 (syz.0.1870) total-vm:45140kB, anon-rss:1360kB, file-rss:1300kB, shmem-rss:0kB, UID:0 pgtables:80kB oom_score_adj:1000 2026/10/27 07:52:20 executed programs: 1870 [ 543.536781][ T27] oom_reaper: reaped process 10239 (syz.0.1870), now anon-rss:0kB, file-rss:72kB, shmem-rss:0kB [ 543.581268][ T44] kworker/u4:3 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 543.581295][ T44] CPU: 0 UID: 0 PID: 44 Comm: kworker/u4:3 Not tainted syzkaller #0 PREEMPT(full) [ 543.581331][ T44] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 543.581339][ T44] Workqueue: loop0 loop_rootcg_workfn [ 543.581362][ T44] Call Trace: [ 543.581368][ T44] [ 543.581374][ T44] dump_stack_lvl+0xe8/0x150 [ 543.581400][ T44] dump_header+0xd3/0x4b0 [ 543.581412][ T44] out_of_memory+0x1021/0x13b0 [ 543.581422][ T44] ? try_charge_memcg+0xc16/0x15f0 [ 543.581441][ T44] ? __pfx_out_of_memory+0x10/0x10 [ 543.581453][ T44] ? do_raw_spin_unlock+0x4d/0x200 [ 543.581471][ T44] try_charge_memcg+0xccc/0x15f0 [ 543.581497][ T44] ? __pfx_try_charge_memcg+0x10/0x10 [ 543.581526][ T44] ? charge_memcg+0x47/0x310 [ 543.581541][ T44] charge_memcg+0x1dd/0x310 [ 543.581556][ T44] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 543.581569][ T44] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 543.581587][ T44] __swap_cache_alloc_folio+0x4de/0x990 [ 543.581620][ T44] swap_cluster_readahead+0x4f2/0x640 [ 543.581647][ T44] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 543.581668][ T44] ? swap_table_get+0x1e/0x260 [ 543.581687][ T44] ? swap_cache_get_folio+0x2e7/0x2f0 [ 543.581704][ T44] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 543.581722][ T44] shmem_swapin_folio+0xe76/0x1f80 [ 543.581745][ T44] ? filemap_get_entry+0xcd/0x3f0 [ 543.581765][ T44] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 543.581784][ T44] ? lock_acquire+0x115/0x350 [ 543.581800][ T44] shmem_get_folio_gfp+0x37e/0x1330 [ 543.581826][ T44] shmem_file_read_iter+0x1b7/0x890 [ 543.581853][ T44] lo_rw_aio+0xc6d/0xf20 [ 543.581878][ T44] ? __pfx_lo_rw_aio+0x10/0x10 [ 543.581892][ T44] ? do_raw_spin_lock+0x12b/0x2f0 [ 543.581910][ T44] ? kthread_associate_blkcg+0x389/0x660 [ 543.581926][ T44] ? _raw_spin_unlock_irq+0x23/0x50 [ 543.581943][ T44] loop_process_work+0x960/0x11c0 [ 543.581971][ T44] ? __pfx_loop_process_work+0x10/0x10 [ 543.581987][ T44] ? look_up_lock_class+0x57/0x110 [ 543.582004][ T44] ? register_lock_class+0x31/0x2e0 [ 543.582022][ T44] ? __lock_acquire+0x747/0x2de0 [ 543.582040][ T44] ? trace_hrtimer_start+0x82/0x200 [ 543.582059][ T44] ? do_raw_spin_lock+0x12b/0x2f0 [ 543.582077][ T44] ? lock_acquire+0x115/0x350 [ 543.582097][ T44] ? rcu_is_watching+0x16/0xb0 [ 543.582110][ T44] ? process_scheduled_works+0x97a/0x1630 [ 543.582122][ T44] process_scheduled_works+0xc3d/0x1630 [ 543.582153][ T44] ? __pfx_process_scheduled_works+0x10/0x10 [ 543.582174][ T44] ? assign_work+0x3cf/0x5d0 [ 543.582195][ T44] worker_thread+0xa47/0xfb0 [ 543.582223][ T44] ? __kthread_parkme+0x71/0x1f0 [ 543.582240][ T44] kthread+0x38b/0x480 [ 543.582249][ T44] ? __pfx_worker_thread+0x10/0x10 [ 543.582260][ T44] ? __pfx_kthread+0x10/0x10 [ 543.582269][ T44] ret_from_fork+0x514/0xb70 [ 543.582280][ T44] ? __pfx_ret_from_fork+0x10/0x10 [ 543.582289][ T44] ? __switch_to+0xc78/0x1410 [ 543.582302][ T44] ? __pfx_kthread+0x10/0x10 [ 543.582312][ T44] ret_from_fork_asm+0x1a/0x30 [ 543.582327][ T44] [ 543.697292][ T44] memory: usage 100kB, limit 96kB, failcnt 53305 [ 543.697306][ T44] memory+swap: usage 124kB, limit 9007199254740988kB, failcnt 0 [ 543.697315][ T44] kmem: usage 84kB, limit 9007199254740988kB, failcnt 0 [ 543.697322][ T44] Memory cgroup stats for /syz0/test: [ 543.697408][ T44] cache 16384 [ 543.697415][ T44] rss 0 [ 543.697419][ T44] rss_huge 0 [ 543.697423][ T44] shmem 8192 [ 543.697427][ T44] mapped_file 0 [ 543.697431][ T44] dirty 0 [ 543.697435][ T44] writeback 0 [ 543.697440][ T44] workingset_refault_anon 1480 [ 543.697444][ T44] workingset_refault_file 7 [ 543.697449][ T44] swap 24576 [ 543.697454][ T44] swapcached 0 [ 543.697458][ T44] pgpgin 2603 [ 543.697463][ T44] pgpgout 2599 [ 543.697467][ T44] pgfault 1716 [ 543.697471][ T44] pgmajfault 651 [ 543.697476][ T44] inactive_anon 0 [ 543.697480][ T44] active_anon 0 [ 543.697484][ T44] inactive_file 0 [ 543.697489][ T44] active_file 8192 [ 543.697493][ T44] unevictable 0 [ 543.697498][ T44] hierarchical_memory_limit 98304 [ 543.697503][ T44] hierarchical_memsw_limit 9223372036854771712 [ 543.697508][ T44] total_cache 16384 [ 543.697513][ T44] total_rss 0 [ 543.697517][ T44] total_rss_huge 0 [ 543.697522][ T44] total_shmem 8192 [ 543.697526][ T44] total_mapped_file 0 [ 543.697530][ T44] total_dirty 0 [ 543.697535][ T44] total_writeback 0 [ 543.697540][ T44] total_workingset_refault_anon 1480 [ 543.697545][ T44] total_workingset_refault_file 7 [ 543.697551][ T44] total_swap 24576 [ 543.697555][ T44] total_swapcached 0 [ 543.697559][ T44] total_pgpgin 2603 [ 543.697564][ T44] total_pgpgout 2599 [ 543.697568][ T44] total_pgfault 1716 [ 543.697573][ T44] total_pgmajfault 651 [ 543.697578][ T44] total_inactive_anon 0 [ 543.697582][ T44] total_active_anon 0 [ 543.697587][ T44] total_inactive_file 0 [ 543.697591][ T44] total_active_file 8192 [ 543.697595][ T44] total_unevictable 0 [ 543.697600][ T44] anon_cost 0 [ 543.697604][ T44] file_cost 0 [ 543.697609][ T44] Out of memory and no killable processes... [ 543.697661][ T44] kernel resource error, dev loop0, sector 24 op 0x0:(READ) flags 0x880700 phys_seg 1 prio class 2 [ 543.896311][ T326] kworker/u4:8 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 543.896331][ T326] CPU: 0 UID: 0 PID: 326 Comm: kworker/u4:8 Not tainted syzkaller #0 PREEMPT(full) [ 543.896340][ T326] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 543.896349][ T326] Workqueue: loop0 loop_workfn [ 543.896372][ T326] Call Trace: [ 543.896377][ T326] [ 543.896384][ T326] dump_stack_lvl+0xe8/0x150 [ 543.896405][ T326] dump_header+0xd3/0x4b0 [ 543.896423][ T326] out_of_memory+0x1021/0x13b0 [ 543.896437][ T326] ? try_charge_memcg+0xc16/0x15f0 [ 543.896461][ T326] ? __pfx_out_of_memory+0x10/0x10 [ 543.896473][ T326] ? do_raw_spin_unlock+0x4d/0x200 [ 543.896493][ T326] try_charge_memcg+0xccc/0x15f0 [ 543.896540][ T326] ? __pfx_try_charge_memcg+0x10/0x10 [ 543.896568][ T326] ? charge_memcg+0x47/0x310 [ 543.896584][ T326] charge_memcg+0x1dd/0x310 [ 543.896600][ T326] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 543.896614][ T326] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 543.896637][ T326] __swap_cache_alloc_folio+0x4de/0x990 [ 543.896664][ T326] swap_cluster_readahead+0x4f2/0x640 [ 543.896685][ T326] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 543.896704][ T326] ? swap_table_get+0x1e/0x260 [ 543.896725][ T326] ? swap_cache_get_folio+0x2e7/0x2f0 [ 543.896742][ T326] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 543.896761][ T326] shmem_swapin_folio+0xe76/0x1f80 [ 543.896780][ T326] ? filemap_get_entry+0xcd/0x3f0 [ 543.896792][ T326] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 543.896808][ T326] shmem_get_folio_gfp+0x37e/0x1330 [ 543.896823][ T326] shmem_file_read_iter+0x1b7/0x890 [ 543.896848][ T326] lo_rw_aio+0xc6d/0xf20 [ 543.896867][ T326] ? lock_acquire+0x115/0x350 [ 543.896886][ T326] ? __pfx_lo_rw_aio+0x10/0x10 [ 543.896908][ T326] ? kthread_associate_blkcg+0x4c0/0x660 [ 543.896929][ T326] ? _raw_spin_unlock_irq+0x23/0x50 [ 543.896951][ T326] loop_process_work+0x960/0x11c0 [ 543.896981][ T326] ? __pfx_loop_process_work+0x10/0x10 [ 543.896997][ T326] ? look_up_lock_class+0x57/0x110 [ 543.897015][ T326] ? register_lock_class+0x31/0x2e0 [ 543.897033][ T326] ? __lock_acquire+0x747/0x2de0 [ 543.897050][ T326] ? lockdep_hardirqs_on+0x7b/0x110 [ 543.897069][ T326] ? do_raw_spin_lock+0x12b/0x2f0 [ 543.897087][ T326] ? lock_acquire+0x115/0x350 [ 543.897103][ T326] ? rcu_is_watching+0x16/0xb0 [ 543.897121][ T326] ? process_scheduled_works+0x97a/0x1630 [ 543.897139][ T326] process_scheduled_works+0xc3d/0x1630 [ 543.897174][ T326] ? __pfx_process_scheduled_works+0x10/0x10 [ 543.897196][ T326] ? assign_work+0x3cf/0x5d0 [ 543.897216][ T326] worker_thread+0xa47/0xfb0 [ 543.897244][ T326] ? __kthread_parkme+0x71/0x1f0 [ 543.897262][ T326] kthread+0x38b/0x480 [ 543.897274][ T326] ? __pfx_worker_thread+0x10/0x10 [ 543.897290][ T326] ? __pfx_kthread+0x10/0x10 [ 543.897307][ T326] ret_from_fork+0x514/0xb70 [ 543.897327][ T326] ? __pfx_ret_from_fork+0x10/0x10 [ 543.897343][ T326] ? __switch_to+0xc78/0x1410 [ 543.897368][ T326] ? __pfx_kthread+0x10/0x10 [ 543.897385][ T326] ret_from_fork_asm+0x1a/0x30 [ 543.897410][ T326] [ 543.974051][ T326] memory: usage 100kB, limit 96kB, failcnt 53320 [ 543.974065][ T326] memory+swap: usage 124kB, limit 9007199254740988kB, failcnt 0 [ 543.974074][ T326] kmem: usage 84kB, limit 9007199254740988kB, failcnt 0 [ 543.974081][ T326] Memory cgroup stats for /syz0/test: [ 543.974162][ T326] cache 16384 [ 543.974168][ T326] rss 0 [ 543.974172][ T326] rss_huge 0 [ 543.974176][ T326] shmem 8192 [ 543.974180][ T326] mapped_file 0 [ 543.974184][ T326] dirty 0 [ 543.974193][ T326] writeback 0 [ 543.974197][ T326] workingset_refault_anon 1480 [ 543.974201][ T326] workingset_refault_file 7 [ 543.974205][ T326] swap 24576 [ 543.974209][ T326] swapcached 0 [ 543.974213][ T326] pgpgin 2603 [ 543.974217][ T326] pgpgout 2599 [ 543.974221][ T326] pgfault 1716 [ 543.974225][ T326] pgmajfault 651 [ 543.974229][ T326] inactive_anon 0 [ 543.974233][ T326] active_anon 8192 [ 543.974237][ T326] inactive_file 0 [ 543.974241][ T326] active_file 8192 [ 543.974245][ T326] unevictable 0 [ 543.974249][ T326] hierarchical_memory_limit 98304 [ 543.974254][ T326] hierarchical_memsw_limit 9223372036854771712 [ 543.974259][ T326] total_cache 16384 [ 543.974263][ T326] total_rss 0 [ 543.974266][ T326] total_rss_huge 0 [ 543.974271][ T326] total_shmem 8192 [ 543.974275][ T326] total_mapped_file 0 [ 543.974279][ T326] total_dirty 0 [ 543.974283][ T326] total_writeback 0 [ 543.974287][ T326] total_workingset_refault_anon 1480 [ 543.974292][ T326] total_workingset_refault_file 7 [ 543.974296][ T326] total_swap 24576 [ 543.974300][ T326] total_swapcached 0 [ 543.974304][ T326] total_pgpgin 2603 [ 543.974309][ T326] total_pgpgout 2599 [ 543.974313][ T326] total_pgfault 1716 [ 543.974317][ T326] total_pgmajfault 651 [ 543.974321][ T326] total_inactive_anon 0 [ 543.974325][ T326] total_active_anon 8192 [ 543.974330][ T326] total_inactive_file 0 [ 543.974334][ T326] total_active_file 8192 [ 543.974339][ T326] total_unevictable 0 [ 543.974343][ T326] anon_cost 0 [ 543.974347][ T326] file_cost 0 [ 543.974352][ T326] Out of memory and no killable processes... [ 543.974411][ T326] kernel resource error, dev loop0, sector 8 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 544.074672][T10240] Unable to read inode block [ 544.349279][ T57] kworker/u4:4 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 544.349308][ T57] CPU: 0 UID: 0 PID: 57 Comm: kworker/u4:4 Not tainted syzkaller #0 PREEMPT(full) [ 544.349322][ T57] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 544.349330][ T57] Workqueue: loop0 loop_rootcg_workfn [ 544.349353][ T57] Call Trace: [ 544.349358][ T57] [ 544.349364][ T57] dump_stack_lvl+0xe8/0x150 [ 544.349386][ T57] dump_header+0xd3/0x4b0 [ 544.349402][ T57] out_of_memory+0x1021/0x13b0 [ 544.349412][ T57] ? try_charge_memcg+0xc16/0x15f0 [ 544.349432][ T57] ? __pfx_out_of_memory+0x10/0x10 [ 544.349443][ T57] ? do_raw_spin_unlock+0x4d/0x200 [ 544.349463][ T57] try_charge_memcg+0xccc/0x15f0 [ 544.349488][ T57] ? __pfx_try_charge_memcg+0x10/0x10 [ 544.349516][ T57] ? charge_memcg+0x47/0x310 [ 544.349532][ T57] charge_memcg+0x1dd/0x310 [ 544.349548][ T57] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 544.349561][ T57] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 544.349595][ T57] __swap_cache_alloc_folio+0x4de/0x990 [ 544.349643][ T57] swap_cluster_readahead+0x4f2/0x640 [ 544.349666][ T57] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 544.349692][ T57] ? swap_table_get+0x1e/0x260 [ 544.349714][ T57] ? swap_cache_get_folio+0x2e7/0x2f0 [ 544.349731][ T57] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 544.349744][ T57] shmem_swapin_folio+0xe76/0x1f80 [ 544.349760][ T57] ? filemap_get_entry+0xcd/0x3f0 [ 544.349776][ T57] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 544.349792][ T57] ? __lock_acquire+0x747/0x2de0 [ 544.349812][ T57] shmem_get_folio_gfp+0x37e/0x1330 [ 544.349837][ T57] shmem_file_read_iter+0x1b7/0x890 [ 544.349864][ T57] lo_rw_aio+0xc6d/0xf20 [ 544.349890][ T57] ? __pfx_lo_rw_aio+0x10/0x10 [ 544.349905][ T57] ? do_raw_spin_lock+0x12b/0x2f0 [ 544.349921][ T57] ? kthread_associate_blkcg+0x389/0x660 [ 544.349935][ T57] ? _raw_spin_unlock_irq+0x23/0x50 [ 544.349953][ T57] loop_process_work+0x960/0x11c0 [ 544.349982][ T57] ? __pfx_loop_process_work+0x10/0x10 [ 544.349995][ T57] ? look_up_lock_class+0x57/0x110 [ 544.350006][ T57] ? register_lock_class+0x31/0x2e0 [ 544.350020][ T57] ? __lock_acquire+0x747/0x2de0 [ 544.350040][ T57] ? irqentry_exit+0x2a0/0x9b0 [ 544.350055][ T57] ? lockdep_hardirqs_on+0x7b/0x110 [ 544.350070][ T57] ? irqentry_exit+0x2a0/0x9b0 [ 544.350094][ T57] ? process_scheduled_works+0x97a/0x1630 [ 544.350114][ T57] ? rcu_is_watching+0x16/0xb0 [ 544.350132][ T57] ? process_scheduled_works+0x97a/0x1630 [ 544.350148][ T57] process_scheduled_works+0xc3d/0x1630 [ 544.350184][ T57] ? __pfx_process_scheduled_works+0x10/0x10 [ 544.350205][ T57] ? assign_work+0x3cf/0x5d0 [ 544.350227][ T57] worker_thread+0xa47/0xfb0 [ 544.350254][ T57] ? __kthread_parkme+0x71/0x1f0 [ 544.350268][ T57] kthread+0x38b/0x480 [ 544.350277][ T57] ? __pfx_worker_thread+0x10/0x10 [ 544.350287][ T57] ? __pfx_kthread+0x10/0x10 [ 544.350296][ T57] ret_from_fork+0x514/0xb70 [ 544.350307][ T57] ? __pfx_ret_from_fork+0x10/0x10 [ 544.350315][ T57] ? __switch_to+0xc78/0x1410 [ 544.350329][ T57] ? __pfx_kthread+0x10/0x10 [ 544.350339][ T57] ret_from_fork_asm+0x1a/0x30 [ 544.350362][ T57] [ 544.490951][ T57] memory: usage 88kB, limit 96kB, failcnt 53357 [ 544.490966][ T57] memory+swap: usage 116kB, limit 9007199254740988kB, failcnt 0 [ 544.490974][ T57] kmem: usage 76kB, limit 9007199254740988kB, failcnt 0 [ 544.490982][ T57] Memory cgroup stats for /syz0/test: [ 544.491069][ T57] cache 8192 [ 544.491076][ T57] rss 0 [ 544.491080][ T57] rss_huge 0 [ 544.491085][ T57] shmem 0 [ 544.491090][ T57] mapped_file 0 [ 544.491095][ T57] dirty 0 [ 544.491100][ T57] writeback 0 [ 544.491105][ T57] workingset_refault_anon 1482 [ 544.491109][ T57] workingset_refault_file 7 [ 544.491114][ T57] swap 28672 [ 544.491118][ T57] swapcached 4096 [ 544.491122][ T57] pgpgin 2605 [ 544.491126][ T57] pgpgout 2602 [ 544.491130][ T57] pgfault 1717 [ 544.491134][ T57] pgmajfault 651 [ 544.491139][ T57] inactive_anon 0 [ 544.491144][ T57] active_anon 0 [ 544.491148][ T57] inactive_file 0 [ 544.491153][ T57] active_file 8192 [ 544.491157][ T57] unevictable 0 [ 544.491162][ T57] hierarchical_memory_limit 98304 [ 544.491167][ T57] hierarchical_memsw_limit 9223372036854771712 [ 544.491173][ T57] total_cache 8192 [ 544.491177][ T57] total_rss 0 [ 544.491182][ T57] total_rss_huge 0 [ 544.491186][ T57] total_shmem 0 [ 544.491190][ T57] total_mapped_file 0 [ 544.491195][ T57] total_dirty 0 [ 544.491199][ T57] total_writeback 0 [ 544.491203][ T57] total_workingset_refault_anon 1482 [ 544.491208][ T57] total_workingset_refault_file 7 [ 544.491213][ T57] total_swap 28672 [ 544.491278][ T57] total_swapcached 4096 [ 544.491284][ T57] total_pgpgin 2605 [ 544.491289][ T57] total_pgpgout 2602 [ 544.491294][ T57] total_pgfault 1717 [ 544.491298][ T57] total_pgmajfault 651 [ 544.491301][ T57] total_inactive_anon 0 [ 544.491303][ T57] total_active_anon 0 [ 544.491306][ T57] total_inactive_file 0 [ 544.491309][ T57] total_active_file 8192 [ 544.491312][ T57] total_unevictable 0 [ 544.491315][ T57] anon_cost 0 [ 544.491318][ T57] file_cost 0 [ 544.491321][ T57] Out of memory and no killable processes... [ 544.491375][ T57] kernel resource error, dev loop0, sector 32 op 0x0:(READ) flags 0x880700 phys_seg 1 prio class 2 [ 544.823027][T10280] loop0: detected capacity change from 0 to 64 [ 544.922644][T10280] syz.0.1889 invoked oom-killer: gfp_mask=0x508d48(GFP_NOFS|__GFP_MOVABLE|__GFP_ZERO|__GFP_NOFAIL|__GFP_HARDWALL|__GFP_ACCOUNT), order=0, oom_score_adj=1000 [ 544.922722][T10280] CPU: 0 UID: 0 PID: 10280 Comm: syz.0.1889 Not tainted syzkaller #0 PREEMPT(full) [ 544.922737][T10280] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 544.922745][T10280] Call Trace: [ 544.922752][T10280] [ 544.922757][T10280] dump_stack_lvl+0xe8/0x150 [ 544.922783][T10280] dump_header+0xd3/0x4b0 [ 544.922802][T10280] oom_kill_process+0x3ab/0x9e0 [ 544.922819][T10280] out_of_memory+0xfb1/0x13b0 [ 544.922832][T10280] ? try_charge_memcg+0xc16/0x15f0 [ 544.922856][T10280] ? __pfx_out_of_memory+0x10/0x10 [ 544.922869][T10280] ? do_raw_spin_unlock+0x4d/0x200 [ 544.922889][T10280] try_charge_memcg+0xccc/0x15f0 [ 544.922916][T10280] ? __pfx_try_charge_memcg+0x10/0x10 [ 544.922935][T10280] ? percpu_ref_tryget+0x15/0x180 [ 544.922958][T10280] ? __obj_cgroup_charge+0x36/0x2d0 [ 544.922973][T10280] __obj_cgroup_charge+0x20a/0x2d0 [ 544.922986][T10280] ? __obj_cgroup_charge+0x36/0x2d0 [ 544.923001][T10280] __memcg_slab_post_alloc_hook+0x772/0xdb0 [ 544.923024][T10280] ? alloc_buffer_head+0x2a/0x280 [ 544.923041][T10280] kmem_cache_alloc_noprof+0x362/0x600 [ 544.923061][T10280] ? alloc_buffer_head+0x2a/0x280 [ 544.923074][T10280] ? kmem_cache_alloc_noprof+0x151/0x600 [ 544.923092][T10280] ? alloc_buffer_head+0x2a/0x280 [ 544.923111][T10280] alloc_buffer_head+0x2a/0x280 [ 544.923125][T10280] ? folio_alloc_buffers+0x186/0x630 [ 544.923143][T10280] folio_alloc_buffers+0x1a4/0x630 [ 544.923162][T10280] bdev_getblk+0x2be/0x670 [ 544.923185][T10280] __bread_gfp+0x89/0x370 [ 544.923202][T10280] minix_V1_raw_inode+0x123/0x1c0 [ 544.923218][T10280] minix_iget+0x1dd/0x1810 [ 544.923232][T10280] ? __pfx_wake_bit_function+0x10/0x10 [ 544.923251][T10280] ? __pfx_minix_iget+0x10/0x10 [ 544.923267][T10280] ? __bread_gfp+0x224/0x370 [ 544.923284][T10280] ? __bread_gfp+0x2be/0x370 [ 544.923302][T10280] minix_fill_super+0x11c4/0x1a90 [ 544.923332][T10280] get_tree_bdev_flags+0x430/0x4f0 [ 544.923346][T10280] ? __pfx_minix_fill_super+0x10/0x10 [ 544.923360][T10280] ? __pfx_get_tree_bdev_flags+0x10/0x10 [ 544.923380][T10280] vfs_get_tree+0x92/0x2a0 [ 544.923396][T10280] do_new_mount+0x325/0xb00 [ 544.923417][T10280] ? __pfx_do_new_mount+0x10/0x10 [ 544.923436][T10280] ? ns_capable+0x84/0xe0 [ 544.923454][T10280] ? path_mount+0x647/0x1050 [ 544.923474][T10280] ? user_path_at+0xd4/0x160 [ 544.923488][T10280] __se_sys_mount+0x31d/0x420 [ 544.923543][T10280] ? __pfx___se_sys_mount+0x10/0x10 [ 544.923564][T10280] ? __x64_sys_mount+0x20/0xc0 [ 544.923590][T10280] do_syscall_64+0x166/0x520 [ 544.923606][T10280] ? trace_irq_disable+0x3b/0x140 [ 544.923622][T10280] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 544.923634][T10280] ? clear_bhb_loop+0x70/0xc0 [ 544.923649][T10280] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 544.923662][T10280] RIP: 0033:0x7fee2fd9f44a [ 544.923675][T10280] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 544.923686][T10280] RSP: 002b:00007fee30c25e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 544.923700][T10280] RAX: ffffffffffffffda RBX: 00007fee30c25ee0 RCX: 00007fee2fd9f44a [ 544.923709][T10280] RDX: 00002000000002c0 RSI: 0000200000000300 RDI: 00007fee30c25ea0 [ 544.923718][T10280] RBP: 00002000000002c0 R08: 00007fee30c25ee0 R09: 0000000000008010 [ 544.923726][T10280] R10: 0000000000008010 R11: 0000000000000246 R12: 0000200000000300 [ 544.923734][T10280] R13: 00007fee30c25ea0 R14: 000000000000018a R15: 0000200000000440 [ 544.923754][T10280] [ 545.121068][T10280] memory: usage 96kB, limit 96kB, failcnt 53435 [ 545.121083][T10280] memory+swap: usage 120kB, limit 9007199254740988kB, failcnt 0 [ 545.121094][T10280] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 545.121102][T10280] Memory cgroup stats for /syz0/test: [ 545.121193][T10280] cache 16384 [ 545.121200][T10280] rss 0 [ 545.121205][T10280] rss_huge 0 [ 545.121210][T10280] shmem 8192 [ 545.121215][T10280] mapped_file 0 [ 545.121219][T10280] dirty 0 [ 545.121224][T10280] writeback 0 [ 545.121229][T10280] workingset_refault_anon 1492 [ 545.121234][T10280] workingset_refault_file 7 [ 545.121240][T10280] swap 24576 [ 545.121244][T10280] swapcached 0 [ 545.121249][T10280] pgpgin 2630 [ 545.121254][T10280] pgpgout 2626 [ 545.121259][T10280] pgfault 1735 [ 545.121264][T10280] pgmajfault 656 [ 545.121269][T10280] inactive_anon 4096 [ 545.121274][T10280] active_anon 4096 [ 545.121279][T10280] inactive_file 0 [ 545.121284][T10280] active_file 8192 [ 545.121288][T10280] unevictable 0 [ 545.121293][T10280] hierarchical_memory_limit 98304 [ 545.121299][T10280] hierarchical_memsw_limit 9223372036854771712 [ 545.121305][T10280] total_cache 16384 [ 545.121310][T10280] total_rss 0 [ 545.121314][T10280] total_rss_huge 0 [ 545.121318][T10280] total_shmem 8192 [ 545.121325][T10280] total_mapped_file 0 [ 545.121330][T10280] total_dirty 0 [ 545.121334][T10280] total_writeback 0 [ 545.121338][T10280] total_workingset_refault_anon 1492 [ 545.121344][T10280] total_workingset_refault_file 7 [ 545.121349][T10280] total_swap 24576 [ 545.121354][T10280] total_swapcached 0 [ 545.121360][T10280] total_pgpgin 2630 [ 545.121365][T10280] total_pgpgout 2626 [ 545.121370][T10280] total_pgfault 1735 [ 545.121374][T10280] total_pgmajfault 656 [ 545.121379][T10280] total_inactive_anon 4096 [ 545.121384][T10280] total_active_anon 4096 [ 545.121389][T10280] total_inactive_file 0 [ 545.121394][T10280] total_active_file 8192 [ 545.121398][T10280] total_unevictable 0 [ 545.121403][T10280] anon_cost 0 [ 545.121408][T10280] file_cost 0 [ 545.121413][T10280] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz0/test,task_memcg=/syz0/test,task=syz.0.1889,pid=10279,uid=0 [ 545.121569][T10280] Memory cgroup out of memory: Killed process 10279 (syz.0.1889) total-vm:45272kB, anon-rss:1368kB, file-rss:1300kB, shmem-rss:0kB, UID:0 pgtables:80kB oom_score_adj:1000 [ 546.113926][T10291] syz.1.1894 invoked oom-killer: gfp_mask=0x400cc0(GFP_KERNEL_ACCOUNT), order=0, oom_score_adj=1000 [ 546.113954][T10291] CPU: 0 UID: 0 PID: 10291 Comm: syz.1.1894 Not tainted syzkaller #0 PREEMPT(full) [ 546.113968][T10291] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 546.113976][T10291] Call Trace: [ 546.113982][T10291] [ 546.113988][T10291] dump_stack_lvl+0xe8/0x150 [ 546.114015][T10291] dump_header+0xd3/0x4b0 [ 546.114036][T10291] oom_kill_process+0x3ab/0x9e0 [ 546.114055][T10291] out_of_memory+0xfb1/0x13b0 [ 546.114068][T10291] ? try_charge_memcg+0xc16/0x15f0 [ 546.114102][T10291] ? __pfx_out_of_memory+0x10/0x10 [ 546.114139][T10291] ? do_raw_spin_unlock+0x4d/0x200 [ 546.114161][T10291] try_charge_memcg+0xccc/0x15f0 [ 546.114189][T10291] ? __pfx_try_charge_memcg+0x10/0x10 [ 546.114209][T10291] ? percpu_ref_tryget+0x15/0x180 [ 546.114233][T10291] ? __obj_cgroup_charge+0x36/0x2d0 [ 546.114249][T10291] __obj_cgroup_charge+0x20a/0x2d0 [ 546.114262][T10291] ? __obj_cgroup_charge+0x36/0x2d0 [ 546.114276][T10291] __memcg_slab_post_alloc_hook+0x772/0xdb0 [ 546.114304][T10291] kmem_cache_alloc_lru_noprof+0x34c/0x5f0 [ 546.114324][T10291] ? kmem_cache_alloc_lru_noprof+0x14e/0x5f0 [ 546.114340][T10291] ? xas_nomem+0x14a/0x1f0 [ 546.114355][T10291] ? xas_nomem+0x14a/0x1f0 [ 546.114373][T10291] xas_nomem+0x14a/0x1f0 [ 546.114391][T10291] shmem_add_to_page_cache+0xa68/0xd40 [ 546.114413][T10291] ? __pfx_shmem_add_to_page_cache+0x10/0x10 [ 546.114436][T10291] shmem_alloc_and_add_folio+0x854/0xf60 [ 546.114451][T10291] ? filemap_get_entry+0xcd/0x3f0 [ 546.114473][T10291] ? __pfx_filemap_get_entry+0x10/0x10 [ 546.114486][T10291] ? folio_mark_accessed+0x444/0x870 [ 546.114501][T10291] ? __pfx_shmem_alloc_and_add_folio+0x10/0x10 [ 546.114517][T10291] ? copy_folio_from_iter_atomic+0x1974/0x1a30 [ 546.114539][T10291] shmem_get_folio_gfp+0x594/0x1330 [ 546.114565][T10291] shmem_write_begin+0x16c/0x330 [ 546.114585][T10291] generic_perform_write+0x2d5/0x8e0 [ 546.114611][T10291] ? __pfx_generic_perform_write+0x10/0x10 [ 546.114629][T10291] ? preempt_count_add+0x6a/0x140 [ 546.114642][T10291] ? mnt_put_write_access_file+0xbc/0x100 [ 546.114659][T10291] ? file_update_time_flags+0x3ab/0x440 [ 546.114677][T10291] shmem_file_write_iter+0xf8/0x120 [ 546.114726][T10291] vfs_write+0x612/0xba0 [ 546.114744][T10291] ? __pfx_vfs_write+0x10/0x10 [ 546.114760][T10291] ? __fget_files+0x3a2/0x420 [ 546.114778][T10291] ? __fget_files+0x2a/0x420 [ 546.114798][T10291] ? fdget+0x1ac/0x250 [ 546.114814][T10291] ksys_write+0x150/0x270 [ 546.114828][T10291] ? __pfx_ksys_write+0x10/0x10 [ 546.114850][T10291] do_syscall_64+0x166/0x520 [ 546.114866][T10291] ? trace_irq_disable+0x3b/0x140 [ 546.114885][T10291] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 546.114898][T10291] ? clear_bhb_loop+0x70/0xc0 [ 546.114916][T10291] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 546.114928][T10291] RIP: 0033:0x7ff23775ea0e [ 546.114943][T10291] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 546.114954][T10291] RSP: 002b:00007ff2386b7da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 546.114971][T10291] RAX: ffffffffffffffda RBX: 00007ff2386b86c0 RCX: 00007ff23775ea0e [ 546.114980][T10291] RDX: 0000000000008000 RSI: 00007ff22e800000 RDI: 0000000000000007 [ 546.114988][T10291] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 546.114996][T10291] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007 [ 546.115004][T10291] R13: 00007ff2386b7ee0 R14: 00007ff2386b7ea0 R15: 00007ff22e800000 [ 546.115027][T10291] [ 546.214557][T10291] memory: usage 96kB, limit 96kB, failcnt 16290 [ 546.214572][T10291] memory+swap: usage 108kB, limit 9007199254740988kB, failcnt 0 [ 546.214581][T10291] kmem: usage 80kB, limit 9007199254740988kB, failcnt 0 [ 546.214589][T10291] Memory cgroup stats for /syz1/test: [ 546.214669][T10291] cache 0 [ 546.214676][T10291] rss 0 [ 546.214681][T10291] rss_huge 0 [ 546.214714][T10291] shmem 0 [ 546.214719][T10291] mapped_file 0 [ 546.214724][T10291] dirty 0 [ 546.214729][T10291] writeback 0 [ 546.214733][T10291] workingset_refault_anon 4595 [ 546.214739][T10291] workingset_refault_file 0 [ 546.214744][T10291] swap 12288 [ 546.214749][T10291] swapcached 12288 [ 546.214754][T10291] pgpgin 9215 [ 546.214759][T10291] pgpgout 9211 [ 546.214764][T10291] pgfault 6785 [ 546.214768][T10291] pgmajfault 2755 [ 546.214773][T10291] inactive_anon 4096 [ 546.214778][T10291] active_anon 8192 [ 546.214783][T10291] inactive_file 0 [ 546.214787][T10291] active_file 0 [ 546.214792][T10291] unevictable 0 [ 546.214798][T10291] hierarchical_memory_limit 98304 [ 546.214804][T10291] hierarchical_memsw_limit 9223372036854771712 [ 546.214809][T10291] total_cache 0 [ 546.214813][T10291] total_rss 0 [ 546.214817][T10291] total_rss_huge 0 [ 546.214822][T10291] total_shmem 0 [ 546.214826][T10291] total_mapped_file 0 [ 546.214831][T10291] total_dirty 0 [ 546.214836][T10291] total_writeback 0 [ 546.214840][T10291] total_workingset_refault_anon 4595 [ 546.214845][T10291] total_workingset_refault_file 0 [ 546.214851][T10291] total_swap 12288 [ 546.214855][T10291] total_swapcached 12288 [ 546.214860][T10291] total_pgpgin 9215 [ 546.214865][T10291] total_pgpgout 9211 [ 546.214870][T10291] total_pgfault 6785 [ 546.214875][T10291] total_pgmajfault 2755 [ 546.214880][T10291] total_inactive_anon 4096 [ 546.214885][T10291] total_active_anon 8192 [ 546.214890][T10291] total_inactive_file 0 [ 546.214895][T10291] total_active_file 0 [ 546.214900][T10291] total_unevictable 0 [ 546.214905][T10291] anon_cost 0 [ 546.214909][T10291] file_cost 0 [ 546.214914][T10291] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/syz1/test,task_memcg=/syz1/test,task=syz.1.1894,pid=10290,uid=0 [ 546.215002][T10291] Memory cgroup out of memory: Killed process 10290 (syz.1.1894) total-vm:180308kB, anon-rss:1360kB, file-rss:1172kB, shmem-rss:0kB, UID:0 pgtables:84kB oom_score_adj:1000 2026/10/27 07:52:25 executed programs: 1890 [ 547.143309][ T27] oom_reaper: reaped process 10279 (syz.0.1889), now anon-rss:0kB, file-rss:72kB, shmem-rss:0kB [ 547.192780][ T182] kworker/u4:6 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 547.192811][ T182] CPU: 0 UID: 0 PID: 182 Comm: kworker/u4:6 Not tainted syzkaller #0 PREEMPT(full) [ 547.192825][ T182] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 547.192834][ T182] Workqueue: loop0 loop_workfn [ 547.192860][ T182] Call Trace: [ 547.192865][ T182] [ 547.192871][ T182] dump_stack_lvl+0xe8/0x150 [ 547.192896][ T182] dump_header+0xd3/0x4b0 [ 547.192914][ T182] out_of_memory+0x1021/0x13b0 [ 547.192929][ T182] ? try_charge_memcg+0xc16/0x15f0 [ 547.192952][ T182] ? __pfx_out_of_memory+0x10/0x10 [ 547.192964][ T182] ? do_raw_spin_unlock+0x4d/0x200 [ 547.192985][ T182] try_charge_memcg+0xccc/0x15f0 [ 547.193014][ T182] ? __pfx_try_charge_memcg+0x10/0x10 [ 547.193043][ T182] ? charge_memcg+0x47/0x310 [ 547.193060][ T182] charge_memcg+0x1dd/0x310 [ 547.193075][ T182] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 547.193092][ T182] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 547.193109][ T182] __swap_cache_alloc_folio+0x4de/0x990 [ 547.193136][ T182] swap_cluster_readahead+0x4f2/0x640 [ 547.193160][ T182] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 547.193205][ T182] ? swap_table_get+0x1e/0x260 [ 547.193226][ T182] ? swap_cache_get_folio+0x2e7/0x2f0 [ 547.193243][ T182] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 547.193260][ T182] shmem_swapin_folio+0xe76/0x1f80 [ 547.193284][ T182] ? filemap_get_entry+0xcd/0x3f0 [ 547.193301][ T182] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 547.193322][ T182] ? lock_acquire+0x115/0x350 [ 547.193341][ T182] shmem_get_folio_gfp+0x37e/0x1330 [ 547.193368][ T182] shmem_file_read_iter+0x1b7/0x890 [ 547.193396][ T182] lo_rw_aio+0xc6d/0xf20 [ 547.193417][ T182] ? lock_acquire+0x115/0x350 [ 547.193434][ T182] ? __pfx_lo_rw_aio+0x10/0x10 [ 547.193455][ T182] ? kthread_associate_blkcg+0x4c0/0x660 [ 547.193470][ T182] ? _raw_spin_unlock_irq+0x23/0x50 [ 547.193487][ T182] loop_process_work+0x960/0x11c0 [ 547.193516][ T182] ? __pfx_loop_process_work+0x10/0x10 [ 547.193532][ T182] ? look_up_lock_class+0x57/0x110 [ 547.193550][ T182] ? register_lock_class+0x31/0x2e0 [ 547.193568][ T182] ? __lock_acquire+0x747/0x2de0 [ 547.193586][ T182] ? trace_hrtimer_start+0x82/0x200 [ 547.193605][ T182] ? do_raw_spin_lock+0x12b/0x2f0 [ 547.193623][ T182] ? lock_acquire+0x115/0x350 [ 547.193643][ T182] ? rcu_is_watching+0x16/0xb0 [ 547.193668][ T182] ? process_scheduled_works+0x97a/0x1630 [ 547.193686][ T182] process_scheduled_works+0xc3d/0x1630 [ 547.193722][ T182] ? __pfx_process_scheduled_works+0x10/0x10 [ 547.193744][ T182] ? assign_work+0x3cf/0x5d0 [ 547.193765][ T182] worker_thread+0xa47/0xfb0 [ 547.193800][ T182] kthread+0x38b/0x480 [ 547.193814][ T182] ? __pfx_worker_thread+0x10/0x10 [ 547.193830][ T182] ? __pfx_kthread+0x10/0x10 [ 547.193844][ T182] ret_from_fork+0x514/0xb70 [ 547.193861][ T182] ? __pfx_ret_from_fork+0x10/0x10 [ 547.193874][ T182] ? __switch_to+0xc78/0x1410 [ 547.193897][ T182] ? __pfx_kthread+0x10/0x10 [ 547.193911][ T182] ret_from_fork_asm+0x1a/0x30 [ 547.193934][ T182] [ 547.310357][ T182] memory: usage 100kB, limit 96kB, failcnt 54176 [ 547.310373][ T182] memory+swap: usage 124kB, limit 9007199254740988kB, failcnt 0 [ 547.310384][ T182] kmem: usage 84kB, limit 9007199254740988kB, failcnt 0 [ 547.310392][ T182] Memory cgroup stats for /syz0/test: [ 547.310485][ T182] cache 16384 [ 547.310491][ T182] rss 0 [ 547.310496][ T182] rss_huge 0 [ 547.310501][ T182] shmem 8192 [ 547.310506][ T182] mapped_file 0 [ 547.310511][ T182] dirty 0 [ 547.310516][ T182] writeback 0 [ 547.310521][ T182] workingset_refault_anon 1492 [ 547.310526][ T182] workingset_refault_file 7 [ 547.310531][ T182] swap 24576 [ 547.310536][ T182] swapcached 0 [ 547.310541][ T182] pgpgin 2630 [ 547.310546][ T182] pgpgout 2626 [ 547.310550][ T182] pgfault 1735 [ 547.310555][ T182] pgmajfault 656 [ 547.310560][ T182] inactive_anon 4096 [ 547.310565][ T182] active_anon 0 [ 547.310569][ T182] inactive_file 0 [ 547.310574][ T182] active_file 8192 [ 547.310579][ T182] unevictable 0 [ 547.310584][ T182] hierarchical_memory_limit 98304 [ 547.310589][ T182] hierarchical_memsw_limit 9223372036854771712 [ 547.310595][ T182] total_cache 16384 [ 547.310600][ T182] total_rss 0 [ 547.310605][ T182] total_rss_huge 0 [ 547.310610][ T182] total_shmem 8192 [ 547.310614][ T182] total_mapped_file 0 [ 547.310619][ T182] total_dirty 0 [ 547.310624][ T182] total_writeback 0 [ 547.310629][ T182] total_workingset_refault_anon 1492 [ 547.310635][ T182] total_workingset_refault_file 7 [ 547.310641][ T182] total_swap 24576 [ 547.310646][ T182] total_swapcached 0 [ 547.310651][ T182] total_pgpgin 2630 [ 547.310656][ T182] total_pgpgout 2626 [ 547.310661][ T182] total_pgfault 1735 [ 547.310666][ T182] total_pgmajfault 656 [ 547.310671][ T182] total_inactive_anon 4096 [ 547.310709][ T182] total_active_anon 0 [ 547.310714][ T182] total_inactive_file 0 [ 547.310720][ T182] total_active_file 8192 [ 547.310725][ T182] total_unevictable 0 [ 547.310730][ T182] anon_cost 0 [ 547.310735][ T182] file_cost 0 [ 547.310740][ T182] Out of memory and no killable processes... [ 547.310799][ T182] kernel resource error, dev loop0, sector 8 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 547.343712][T10280] Unable to read inode block [ 547.584129][ T182] kworker/u4:6 invoked oom-killer: gfp_mask=0x100c0a(GFP_NOIO|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_HARDWALL), order=0, oom_score_adj=0 [ 547.584158][ T182] CPU: 0 UID: 0 PID: 182 Comm: kworker/u4:6 Not tainted syzkaller #0 PREEMPT(full) [ 547.584172][ T182] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 547.584180][ T182] Workqueue: loop0 loop_rootcg_workfn [ 547.584203][ T182] Call Trace: [ 547.584209][ T182] [ 547.584215][ T182] dump_stack_lvl+0xe8/0x150 [ 547.584236][ T182] dump_header+0xd3/0x4b0 [ 547.584255][ T182] out_of_memory+0x1021/0x13b0 [ 547.584269][ T182] ? try_charge_memcg+0xc16/0x15f0 [ 547.584293][ T182] ? __pfx_out_of_memory+0x10/0x10 [ 547.584306][ T182] ? do_raw_spin_unlock+0x4d/0x200 [ 547.584320][ T182] try_charge_memcg+0xccc/0x15f0 [ 547.584337][ T182] ? __pfx_try_charge_memcg+0x10/0x10 [ 547.584383][ T182] ? charge_memcg+0x47/0x310 [ 547.584401][ T182] charge_memcg+0x1dd/0x310 [ 547.584416][ T182] ? mem_cgroup_swapin_charge_folio+0x2b/0x390 [ 547.584430][ T182] mem_cgroup_swapin_charge_folio+0x25a/0x390 [ 547.584445][ T182] __swap_cache_alloc_folio+0x4de/0x990 [ 547.584473][ T182] swap_cluster_readahead+0x4f2/0x640 [ 547.584494][ T182] ? __pfx_swap_cluster_readahead+0x10/0x10 [ 547.584515][ T182] ? swap_table_get+0x1e/0x260 [ 547.584535][ T182] ? swap_cache_get_folio+0x2e7/0x2f0 [ 547.584553][ T182] ? mpol_shared_policy_lookup+0x14b/0x1e0 [ 547.584572][ T182] shmem_swapin_folio+0xe76/0x1f80 [ 547.584595][ T182] ? filemap_get_entry+0xcd/0x3f0 [ 547.584615][ T182] ? __pfx_shmem_swapin_folio+0x10/0x10 [ 547.584632][ T182] ? clockevents_program_event+0x491/0x630 [ 547.584648][ T182] ? __pfx_clockevents_program_event+0x10/0x10 [ 547.584663][ T182] shmem_get_folio_gfp+0x37e/0x1330 [ 547.584689][ T182] shmem_file_read_iter+0x1b7/0x890 [ 547.584715][ T182] lo_rw_aio+0xc6d/0xf20 [ 547.584740][ T182] ? __pfx_lo_rw_aio+0x10/0x10 [ 547.584754][ T182] ? do_raw_spin_lock+0x12b/0x2f0 [ 547.584772][ T182] ? kthread_associate_blkcg+0x389/0x660 [ 547.584786][ T182] ? _raw_spin_unlock_irq+0x23/0x50 [ 547.584805][ T182] loop_process_work+0x960/0x11c0 [ 547.584834][ T182] ? __pfx_loop_process_work+0x10/0x10 [ 547.584849][ T182] ? look_up_lock_class+0x57/0x110 [ 547.584866][ T182] ? register_lock_class+0x31/0x2e0 [ 547.584884][ T182] ? __lock_acquire+0x747/0x2de0 [ 547.584909][ T182] ? do_raw_spin_lock+0x12b/0x2f0 [ 547.584927][ T182] ? lock_acquire+0x115/0x350 [ 547.584948][ T182] ? rcu_is_watching+0x16/0xb0 [ 547.584968][ T182] ? process_scheduled_works+0x97a/0x1630 [ 547.584986][ T182] process_scheduled_works+0xc3d/0x1630 [ 547.585024][ T182] ? __pfx_process_scheduled_works+0x10/0x10 [ 547.585046][ T182] ? assign_work+0x3cf/0x5d0 [ 547.585067][ T182] worker_thread+0xa47/0xfb0 [ 547.585100][ T182] kthread+0x38b/0x480 [ 547.585114][ T182] ? __pfx_worker_thread+0x10/0x10 [ 547.585136][ T182] ? __pfx_kthread+0x10/0x10 [ 547.585151][ T182] ret_from_fork+0x514/0xb70 [ 547.585167][ T182] ? __pfx_ret_from_fork+0x10/0x10 [ 547.585181][ T182] ? __switch_to+0xc78/0x1410 [ 547.585200][ T182] ? __pfx_kthread+0x10/0x10 [ 547.585215][ T182] ret_from_fork_asm+0x1a/0x30 [ 547.585240][ T182] [ 547.656467][ T182] memory: usage 96kB, limit 96kB, failcnt 54195 [ 547.656482][ T182] memory+swap: usage 116kB, limit 9007199254740988kB, failcnt 0 [ 547.656491][ T182] kmem: usage 76kB, limit 9007199254740988kB, failcnt 0 [ 547.656499][ T182] Memory cgroup stats for /syz0/test: [ 547.656585][ T182] cache 20480 [ 547.656591][ T182] rss 0 [ 547.656595][ T182] rss_huge 0 [ 547.656600][ T182] shmem 12288 [ 547.656604][ T182] mapped_file 0 [ 547.656609][ T182] dirty 0 [ 547.656614][ T182] writeback 0 [ 547.656618][ T182] workingset_refault_anon 1493 [ 547.656623][ T182] workingset_refault_file 7 [ 547.656628][ T182] swap 20480 [ 547.656633][ T182] swapcached 0 [ 547.656637][ T182] pgpgin 2631 [ 547.656641][ T182] pgpgout 2626 [ 547.656646][ T182] pgfault 1736 [ 547.656650][ T182] pgmajfault 656 [ 547.656655][ T182] inactive_anon 4096 [ 547.656660][ T182] active_anon 8192 [ 547.656665][ T182] inactive_file 0 [ 547.656670][ T182] active_file 8192 [host] Command execution timed out after 6m0s