RDX: 0000000000000004 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007ffe945357a0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor407/8121 is trying to acquire lock: 00000000387fcea5 (console_owner){....}, at: log_next kernel/printk/printk.c:511 [inline] 00000000387fcea5 (console_owner){....}, at: console_unlock+0x3a9/0x1110 kernel/printk/printk.c:2447 but task is already holding lock: 00000000b1995e81 (&(&port->lock)->rlock){-.-.}, at: pty_write+0xf4/0x1f0 drivers/tty/pty.c:120 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&(&port->lock)->rlock){-.-.}: tty_port_tty_get+0x1d/0x80 drivers/tty/tty_port.c:289 tty_port_default_wakeup+0x11/0x40 drivers/tty/tty_port.c:47 serial8250_tx_chars+0x490/0xaf0 drivers/tty/serial/8250/8250_port.c:1813 serial8250_handle_irq.part.0+0x31f/0x3d0 drivers/tty/serial/8250/8250_port.c:1900 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1873 [inline] serial8250_default_handle_irq+0xae/0x220 drivers/tty/serial/8250/8250_port.c:1916 serial8250_interrupt+0x101/0x240 drivers/tty/serial/8250/8250_core.c:125 __handle_irq_event_percpu+0x27e/0x8e0 kernel/irq/handle.c:149 handle_irq_event_percpu kernel/irq/handle.c:189 [inline] handle_irq_event+0x102/0x290 kernel/irq/handle.c:206 handle_edge_irq+0x260/0xcf0 kernel/irq/chip.c:800 generic_handle_irq_desc include/linux/irqdesc.h:155 [inline] handle_irq+0x35/0x50 arch/x86/kernel/irq_64.c:87 do_IRQ+0x93/0x1c0 arch/x86/kernel/irq.c:246 ret_from_intr+0x0/0x1e arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:184 spin_unlock_irqrestore include/linux/spinlock.h:384 [inline] uart_write+0x3bb/0x6f0 drivers/tty/serial/serial_core.c:612 do_output_char+0x5de/0x850 drivers/tty/n_tty.c:445 process_output drivers/tty/n_tty.c:512 [inline] n_tty_write+0x46e/0xff0 drivers/tty/n_tty.c:2343 do_tty_write drivers/tty/tty_io.c:960 [inline] tty_write+0x496/0x810 drivers/tty/tty_io.c:1044 redirected_tty_write+0xaa/0xb0 drivers/tty/tty_io.c:1065 do_loop_readv_writev fs/read_write.c:704 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_write+0x461/0x5d0 fs/read_write.c:962 vfs_writev+0x153/0x2e0 fs/read_write.c:1005 do_writev+0x136/0x330 fs/read_write.c:1040 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (&port_lock_key){-.-.}: serial8250_console_write+0x90e/0xb70 drivers/tty/serial/8250/8250_port.c:3290 call_console_drivers kernel/printk/printk.c:1764 [inline] console_unlock+0xbb6/0x1110 kernel/printk/printk.c:2460 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 register_console+0x87f/0xc90 kernel/printk/printk.c:2776 univ8250_console_init+0x3a/0x46 drivers/tty/serial/8250/8250_core.c:684 console_init+0x4cb/0x718 kernel/printk/printk.c:2862 start_kernel+0x686/0x911 init/main.c:659 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 -> #0 (console_owner){....}: console_lock_spinning_enable kernel/printk/printk.c:1627 [inline] console_unlock+0x411/0x1110 kernel/printk/printk.c:2457 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 fail_dump lib/fault-inject.c:44 [inline] should_fail+0x66b/0x7b0 lib/fault-inject.c:149 __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0x10 mm/slab_common.c:1590 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x6d/0x3c0 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc+0x23f/0x2a0 drivers/tty/tty_buffer.c:170 __tty_buffer_request_room+0x156/0x2a0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x250 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x126/0x1f0 drivers/tty/pty.c:122 n_tty_write+0xa03/0xff0 drivers/tty/n_tty.c:2354 do_tty_write drivers/tty/tty_io.c:960 [inline] tty_write+0x496/0x810 drivers/tty/tty_io.c:1044 __vfs_write+0xf7/0x770 fs/read_write.c:485 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: console_owner --> &port_lock_key --> &(&port->lock)->rlock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&(&port->lock)->rlock); lock(&port_lock_key); lock(&(&port->lock)->rlock); lock(console_owner); *** DEADLOCK *** 6 locks held by syz-executor407/8121: #0: 000000001e847731 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 000000006fabb836 (&tty->atomic_write_lock){+.+.}, at: tty_write_lock drivers/tty/tty_io.c:886 [inline] #1: 000000006fabb836 (&tty->atomic_write_lock){+.+.}, at: do_tty_write drivers/tty/tty_io.c:909 [inline] #1: 000000006fabb836 (&tty->atomic_write_lock){+.+.}, at: tty_write+0x24e/0x810 drivers/tty/tty_io.c:1044 #2: 00000000f9e1cf51 (&tty->termios_rwsem){++++}, at: n_tty_write+0x1b5/0xff0 drivers/tty/n_tty.c:2314 #3: 0000000037ae842e (&ldata->output_lock){+.+.}, at: n_tty_write+0x9d0/0xff0 drivers/tty/n_tty.c:2353 #4: 00000000b1995e81 (&(&port->lock)->rlock){-.-.}, at: pty_write+0xf4/0x1f0 drivers/tty/pty.c:120 #5: 00000000cbae13c8 (console_lock){+.+.}, at: vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 stack backtrace: CPU: 1 PID: 8121 Comm: syz-executor407 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 console_lock_spinning_enable kernel/printk/printk.c:1627 [inline] console_unlock+0x411/0x1110 kernel/printk/printk.c:2457 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 fail_dump lib/fault-inject.c:44 [inline] should_fail+0x66b/0x7b0 lib/fault-inject.c:149 __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0x10 mm/slab_common.c:1590 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x6d/0x3c0 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc+0x23f/0x2a0 drivers/tty/tty_buffer.c:170 __tty_buffer_request_room+0x156/0x2a0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x250 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x126/0x1f0 drivers/tty/pty.c:122 n_tty_write+0xa03/0xff0 drivers/tty/n_tty.c:2354 do_tty_write drivers/tty/tty_io.c:960 [inline] tty_write+0x496/0x810 drivers/tty/tty_io.c:1044 __vfs_write+0xf7/0x770 fs/read_write.c:485 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7ff36c17d079 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe94535788 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007ff36c17d079 RDX: 0000000000000004 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007ffe945357a0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8124 Comm: syz-executor407 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3088 [inline] prepare_alloc_pages mm/page_alloc.c:4346 [inline] __alloc_pages_nodemask+0x239/0x2890 mm/page_alloc.c:4393 alloc_pages_vma+0xf2/0x780 mm/mempolicy.c:2161 wp_page_copy+0x219/0x2c40 mm/memory.c:2605 do_wp_page+0x2d4/0x2210 mm/memory.c:2903 handle_pte_fault mm/memory.c:4191 [inline] __handle_mm_fault+0x258b/0x41c0 mm/memory.c:4299 handle_mm_fault+0x436/0xb10 mm/memory.c:4336 __do_page_fault+0x68e/0xd60 arch/x86/mm/fault.c:1412 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7ff36c145e25 Code: 0a 00 00 74 08 84 c9 0f 85 46 02 00 00 45 31 e4 0f 1f 44 00 00 64 8b 04 25 18 00 00 00 ba 01 00 00 00 85 c0 0f 85 d5 01 00 00 <0f> b1 15 1c b0 0a 00 4c 8b 33 4d 85 f6 75 3b e9 72 01 00 00 0f 1f RSP: 002b:00007ffe94535740 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ff36c1ee140 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 00007ff36c1ee140 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 syz-executor407 invoked oom-killer: gfp_mask=0x0(), nodemask=(null), order=0, oom_score_adj=1000 syz-executor407 cpuset=/ mems_allowed=0-1 CPU: 1 PID: 8124 Comm: syz-executor407 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 dump_header+0x15d/0xc3f mm/oom_kill.c:443 oom_kill_process.cold+0x10/0x692 mm/oom_kill.c:956 out_of_memory mm/oom_kill.c:1132 [inline] out_of_memory+0x34d/0x1390 mm/oom_kill.c:1064 pagefault_out_of_memory+0x102/0x120 mm/oom_kill.c:1157 mm_fault_error+0x106/0x390 arch/x86/mm/fault.c:1040 __do_page_fault+0xc34/0xd60 arch/x86/mm/fault.c:1440 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7ff36c145e25 Code: 0a 00 00 74 08 84 c9 0f 85 46 02 00 00 45 31 e4 0f 1f 44 00 00 64 8b 04 25 18 00 00 00 ba 01 00 00 00 85 c0 0f 85 d5 01 00 00 <0f> b1 15 1c b0 0a 00 4c 8b 33 4d 85 f6 75 3b e9 72 01 00 00 0f 1f RSP: 002b:00007ffe94535740 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ff36c1ee140 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 00007ff36c1ee140 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 Mem-Info: active_anon:3007 inactive_anon:4720 isolated_anon:0 active_file:5309 inactive_file:11905 isolated_file:0 unevictable:0 dirty:7886 writeback:0 unstable:0 slab_reclaimable:16184 slab_unreclaimable:112406 mapped:3706 shmem:4898 pagetables:339 bounce:0 free:1531297 free_pcp:578 free_cma:0 Node 0 active_anon:12028kB inactive_anon:18880kB active_file:21116kB inactive_file:47620kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:14824kB dirty:31536kB writeback:0kB shmem:19592kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2048kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 1 active_anon:0kB inactive_anon:0kB active_file:120kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:8kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 0 DMA free:15908kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2693 2695 2695 2695 Node 0 DMA32 free:2069812kB min:35996kB low:44992kB high:53988kB active_anon:12028kB inactive_anon:18880kB active_file:21116kB inactive_file:47620kB unevictable:0kB writepending:31536kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:6528kB pagetables:1356kB bounce:0kB free_pcp:2272kB local_pcp:992kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 1 Normal free:4039876kB min:53876kB low:67344kB high:80812kB active_anon:0kB inactive_anon:0kB active_file:120kB inactive_file:0kB unevictable:0kB writepending:8kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 1313*4kB (U) 12*8kB (UM) 488*16kB (UM) 193*32kB (UM) 40*64kB (UME) 9*128kB (UM) 6*256kB (UME) 2*512kB (UM) 4*1024kB (UME) 4*2048kB (UME) 496*4096kB (M) = 2069508kB Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB Node 1 Normal: 93*4kB (UE) 414*8kB (UE) 292*16kB (UME) 77*32kB (UME) 28*64kB (UME) 9*128kB (UM) 9*256kB (UM) 7*512kB (UM) 4*1024kB (UME) 1*2048kB (U) 980*4096kB (M) = 4039876kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 22115 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 2097051 pages RAM 0 pages HighMem/MovableOnly 369649 pages reserved 0 pages cma reserved Unreclaimable slab info: Name Used Total TIPC 1KB 7KB SCTPv6 2KB 6KB DCCPv6 2KB 7KB DCCP 2KB 7KB RXRPC 1KB 6KB rxrpc_call_jar 11KB 15KB fib6_nodes 0KB 4KB ip6_dst_cache 0KB 3KB RAWv6 10KB 13KB UDPv6 13KB 15KB TCPv6 6KB 6KB nf_conntrack 18KB 26KB t10_alua_lu_gp_cache 0KB 3KB sd_ext_cdb 0KB 7KB scsi_sense_cache 1056KB 1064KB virtio_scsi_cmd 16KB 16KB sgpool-128 8KB 8KB sgpool-64 4KB 12KB sgpool-32 2KB 15KB sgpool-16 1KB 7KB sgpool-8 0KB 7KB mqueue_inode_cache 1KB 7KB bio_post_read_ctx 14KB 15KB bio-2 14KB 15KB jfs_mp 7KB 7KB cifs_small_rq 15KB 16KB cifs_request 67KB 67KB cifs_mpx_ids 0KB 7KB nfs_commit_data 3KB 14KB nfs_write_data 34KB 44KB ext4_system_zone 1KB 7KB bio-1 1KB 7KB rpc_buffers 17KB 25KB rpc_tasks 2KB 7KB UNIX 391KB 401KB tcp_bind_bucket 0KB 4KB ip_fib_trie 0KB 3KB ip_fib_alias 0KB 3KB ip_dst_cache 3KB 8KB RAW 6KB 7KB UDP 25KB 47KB TCP 5KB 11KB hugetlbfs_inode_cache 3KB 15KB fscache_cookie_jar 1KB 7KB eventpoll_pwq 20KB 75KB eventpoll_epi 39KB 129KB inotify_inode_mark 6KB 7KB request_queue 215KB 309KB blkdev_requests 1KB 3KB blkdev_ioc 4KB 15KB bio-0 76KB 150KB biovec-max 1237KB 1245KB biovec-64 23KB 55KB biovec-16 3KB 22KB bio_integrity_payload 1KB 8KB khugepaged_mm_slot 0KB 3KB uid_cache 1KB 12KB dmaengine-unmap-2 0KB 3KB skbuff_fclone_cache 585KB 585KB skbuff_head_cache 2109KB 2231KB configfs_dir_cache 3KB 7KB file_lock_cache 95KB 106KB file_lock_ctx 9KB 11KB fsnotify_mark_connector 2KB 7KB shmem_inode_cache 7816KB 7820KB task_delay_info 77KB 379KB taskstats 0KB 3KB proc_dir_entry 302KB 307KB pde_opener 34KB 77KB seq_file 357KB 677KB sigqueue 29KB 63KB kernfs_node_cache 9950KB 9965KB mnt_cache 68KB 76KB filp 10392KB 10395KB names_cache 176443KB 176464KB iint_cache 79KB 79KB key_jar 4KB 7KB nsproxy 0KB 3KB vm_area_struct 1874KB 1914KB mm_struct 198KB 461KB fs_cache 67KB 312KB files_cache 151KB 382KB signal_cache 471KB 1250KB sighand_cache 492KB 561KB task_struct 1836KB 1836KB cred_jar 994KB 1984KB anon_vma_chain 664KB 874KB anon_vma 168KB 373KB pid 54KB 308KB Acpi-Operand 157KB 205KB Acpi-ParseExt 8KB 11KB Acpi-Parse 41KB 51KB Acpi-State 52KB 70KB Acpi-Namespace 20KB 27KB numa_policy 0KB 3KB debug_objects_cache 691KB 710KB trace_event_file 297KB 298KB ftrace_event_field 398KB 401KB pool_workqueue 79KB 80KB page->ptl 191KB 482KB kmalloc-2097152 2050KB 2050KB kmalloc-524288 2056KB 2056KB kmalloc-262144 1290KB 1290KB kmalloc-131072 650KB 650KB kmalloc-65536 264KB 330KB kmalloc-32768 660KB 660KB kmalloc-16384 247KB 280KB kmalloc-8192 1122KB 1163KB kmalloc-4096 9175KB 9235KB kmalloc-2048 6834KB 6840KB kmalloc-1024 3816KB 3858KB kmalloc-512 3148KB 4421KB kmalloc-256 1937KB 2411KB kmalloc-128 444KB 500KB kmalloc-96 2553KB 2576KB kmalloc-64 2364KB 2476KB kmalloc-32 1054KB 1901KB kmalloc-192 1000KB 1848KB kmem_cache 177KB 183KB Tasks state (memory values in pages): [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name [ 4695] 0 4695 11524 1689 118784 0 0 systemd-journal [ 4697] 0 4697 10980 976 118784 0 -1000 systemd-udevd [ 6169] 100 6169 30769 998 139264 0 0 systemd-timesyn [ 6180] 0 6180 5115 276 69632 0 0 dhclient [ 7768] 0 7768 63583 842 143360 0 0 rsyslogd [ 7777] 0 7777 6999 589 102400 0 0 cron [ 7815] 0 7815 3221 421 73728 0 0 agetty [ 7829] 0 7829 17490 1612 180224 0 -1000 sshd [ 7884] 0 7884 3221 436 73728 0 0 agetty [ 7890] 0 7890 3221 408 69632 0 0 agetty [ 7905] 0 7905 3221 408 69632 0 0 agetty [ 7928] 0 7928 3165 411 73728 0 0 agetty [ 7931] 0 7931 3221 437 69632 0 0 agetty [ 7939] 0 7939 3221 391 73728 0 0 agetty [ 8114] 0 8114 17490 1622 180224 0 0 sshd [ 8116] 0 8116 4360 1 32768 0 0 syz-executor407 [ 8124] 0 8124 4360 524 45056 0 1000 syz-executor407 Out of memory: Kill process 8124 (syz-executor407) score 1000 or sacrifice child Killed process 8124 (syz-executor407) total-vm:17440kB, anon-rss:2096kB, file-rss:0kB, shmem-rss:0kB oom_reaper: reaped process 8124 (syz-executor407), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 8127 Comm: syz-executor407 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3088 [inline] prepare_alloc_pages mm/page_alloc.c:4346 [inline] __alloc_pages_nodemask+0x239/0x2890 mm/page_alloc.c:4393 alloc_pages_vma+0xf2/0x780 mm/mempolicy.c:2161 wp_page_copy+0x219/0x2c40 mm/memory.c:2605 do_wp_page+0x2d4/0x2210 mm/memory.c:2903 handle_pte_fault mm/memory.c:4191 [inline] __handle_mm_fault+0x258b/0x41c0 mm/memory.c:4299 handle_mm_fault+0x436/0xb10 mm/memory.c:4336 __do_page_fault+0x68e/0xd60 arch/x86/mm/fault.c:1412 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7ff36c145e25 Code: 0a 00 00 74 08 84 c9 0f 85 46 02 00 00 45 31 e4 0f 1f 44 00 00 64 8b 04 25 18 00 00 00 ba 01 00 00 00 85 c0 0f 85 d5 01 00 00 <0f> b1 15 1c b0 0a 00 4c 8b 33 4d 85 f6 75 3b e9 72 01 00 00 0f 1f RSP: 002b:00007ffe94535740 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ff36c1ee140 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 00007ff36c1ee140 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 syz-executor407 invoked oom-killer: gfp_mask=0x0(), nodemask=(null), order=0, oom_score_adj=1000 syz-executor407 cpuset=/ mems_allowed=0-1 CPU: 1 PID: 8127 Comm: syz-executor407 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 dump_header+0x15d/0xc3f mm/oom_kill.c:443 oom_kill_process.cold+0x10/0x692 mm/oom_kill.c:956 out_of_memory mm/oom_kill.c:1132 [inline] out_of_memory+0x34d/0x1390 mm/oom_kill.c:1064 pagefault_out_of_memory+0x102/0x120 mm/oom_kill.c:1157 mm_fault_error+0x106/0x390 arch/x86/mm/fault.c:1040 __do_page_fault+0xc34/0xd60 arch/x86/mm/fault.c:1440 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7ff36c145e25 Code: 0a 00 00 74 08 84 c9 0f 85 46 02 00 00 45 31 e4 0f 1f 44 00 00 64 8b 04 25 18 00 00 00 ba 01 00 00 00 85 c0 0f 85 d5 01 00 00 <0f> b1 15 1c b0 0a 00 4c 8b 33 4d 85 f6 75 3b e9 72 01 00 00 0f 1f RSP: 002b:00007ffe94535740 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ff36c1ee140 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 00007ff36c1ee140 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 Mem-Info: active_anon:2987 inactive_anon:4720 isolated_anon:0 active_file:5309 inactive_file:11905 isolated_file:0 unevictable:0 dirty:7895 writeback:0 unstable:0 slab_reclaimable:16184 slab_unreclaimable:112357 mapped:3719 shmem:4898 pagetables:339 bounce:0 free:1531415 free_pcp:517 free_cma:0 Node 0 active_anon:11948kB inactive_anon:18880kB active_file:21116kB inactive_file:47620kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:14876kB dirty:31572kB writeback:0kB shmem:19592kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2048kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 1 active_anon:0kB inactive_anon:0kB active_file:120kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:8kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 0 DMA free:15908kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2693 2695 2695 2695 Node 0 DMA32 free:2070076kB min:35996kB low:44992kB high:53988kB active_anon:11928kB inactive_anon:18880kB active_file:21116kB inactive_file:47696kB unevictable:0kB writepending:31620kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:6528kB pagetables:1356kB bounce:0kB free_pcp:2136kB local_pcp:1092kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 1 Normal free:4039876kB min:53876kB low:67344kB high:80812kB active_anon:0kB inactive_anon:0kB active_file:120kB inactive_file:0kB unevictable:0kB writepending:8kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 1313*4kB (U) 12*8kB (UM) 462*16kB (UM) 210*32kB (UM) 41*64kB (UME) 9*128kB (UM) 6*256kB (UME) 2*512kB (UM) 4*1024kB (UME) 4*2048kB (UME) 496*4096kB (M) = 2069700kB Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB Node 1 Normal: 93*4kB (UE) 414*8kB (UE) 292*16kB (UME) 77*32kB (UME) 28*64kB (UME) 9*128kB (UM) 9*256kB (UM) 7*512kB (UM) 4*1024kB (UME) 1*2048kB (U) 980*4096kB (M) = 4039876kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 22136 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 2097051 pages RAM 0 pages HighMem/MovableOnly 369649 pages reserved 0 pages cma reserved Unreclaimable slab info: Name Used Total TIPC 1KB 7KB SCTPv6 2KB 6KB DCCPv6 2KB 7KB DCCP 2KB 7KB RXRPC 1KB 6KB rxrpc_call_jar 11KB 15KB fib6_nodes 0KB 4KB ip6_dst_cache 0KB 3KB RAWv6 10KB 13KB UDPv6 13KB 15KB TCPv6 6KB 6KB nf_conntrack 18KB 26KB t10_alua_lu_gp_cache 0KB 3KB sd_ext_cdb 0KB 7KB scsi_sense_cache 1056KB 1064KB virtio_scsi_cmd 16KB 16KB sgpool-128 8KB 8KB sgpool-64 4KB 12KB sgpool-32 2KB 15KB sgpool-16 1KB 7KB sgpool-8 0KB 7KB mqueue_inode_cache 1KB 7KB bio_post_read_ctx 14KB 15KB bio-2 14KB 15KB jfs_mp 7KB 7KB cifs_small_rq 15KB 16KB cifs_request 67KB 67KB cifs_mpx_ids 0KB 7KB nfs_commit_data 3KB 14KB nfs_write_data 34KB 44KB ext4_system_zone 1KB 7KB bio-1 1KB 7KB rpc_buffers 17KB 25KB rpc_tasks 2KB 7KB UNIX 390KB 401KB tcp_bind_bucket 0KB 4KB ip_fib_trie 0KB 3KB ip_fib_alias 0KB 3KB ip_dst_cache 3KB 8KB RAW 6KB 7KB UDP 25KB 47KB TCP 5KB 11KB hugetlbfs_inode_cache 3KB 15KB fscache_cookie_jar 1KB 7KB eventpoll_pwq 20KB 75KB eventpoll_epi 39KB 126KB inotify_inode_mark 6KB 7KB request_queue 215KB 309KB blkdev_requests 1KB 3KB blkdev_ioc 4KB 15KB bio-0 76KB 150KB biovec-max 1237KB 1245KB biovec-64 23KB 55KB biovec-16 3KB 22KB bio_integrity_payload 1KB 8KB khugepaged_mm_slot 0KB 3KB uid_cache 1KB 12KB dmaengine-unmap-2 0KB 3KB skbuff_fclone_cache 585KB 585KB skbuff_head_cache 2067KB 2231KB configfs_dir_cache 3KB 7KB file_lock_cache 95KB 106KB file_lock_ctx 9KB 11KB fsnotify_mark_connector 2KB 7KB shmem_inode_cache 7816KB 7820KB task_delay_info 73KB 363KB taskstats 0KB 3KB proc_dir_entry 302KB 307KB pde_opener 33KB 77KB seq_file 331KB 669KB sigqueue 24KB 63KB kernfs_node_cache 9950KB 9965KB mnt_cache 68KB 76KB filp 10512KB 10515KB names_cache 176795KB 176817KB iint_cache 79KB 79KB key_jar 4KB 7KB nsproxy 0KB 3KB vm_area_struct 1878KB 1914KB mm_struct 196KB 461KB fs_cache 61KB 280KB files_cache 141KB 356KB signal_cache 464KB 1221KB sighand_cache 481KB 555KB task_struct 1843KB 1843KB cred_jar 1093KB 1984KB anon_vma_chain 664KB 874KB anon_vma 168KB 373KB pid 51KB 300KB Acpi-Operand 157KB 205KB Acpi-ParseExt 8KB 11KB Acpi-Parse 41KB 51KB Acpi-State 52KB 70KB Acpi-Namespace 20KB 27KB numa_policy 0KB 3KB debug_objects_cache 691KB 710KB trace_event_file 297KB 298KB ftrace_event_field 398KB 401KB pool_workqueue 79KB 80KB page->ptl 191KB 482KB kmalloc-2097152 2050KB 2050KB kmalloc-524288 2056KB 2056KB kmalloc-262144 1290KB 1290KB kmalloc-131072 650KB 650KB kmalloc-65536 264KB 330KB kmalloc-32768 660KB 660KB kmalloc-16384 247KB 280KB kmalloc-8192 1122KB 1163KB kmalloc-4096 8759KB 8818KB kmalloc-2048 6842KB 6846KB kmalloc-1024 3879KB 3921KB kmalloc-512 3097KB 4395KB kmalloc-256 1936KB 2411KB kmalloc-128 444KB 500KB kmalloc-96 2569KB 2592KB kmalloc-64 2364KB 2476KB kmalloc-32 1054KB 1901KB kmalloc-192 1000KB 1848KB kmem_cache 177KB 183KB Tasks state (memory values in pages): [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name [ 4695] 0 4695 11524 1755 118784 0 0 systemd-journal [ 4697] 0 4697 10980 976 118784 0 -1000 systemd-udevd [ 6169] 100 6169 30769 998 139264 0 0 systemd-timesyn [ 6180] 0 6180 5115 276 69632 0 0 dhclient [ 7768] 0 7768 63583 842 143360 0 0 rsyslogd [ 7777] 0 7777 6999 589 102400 0 0 cron [ 7815] 0 7815 3221 421 73728 0 0 agetty [ 7829] 0 7829 17490 1612 180224 0 -1000 sshd [ 7884] 0 7884 3221 436 73728 0 0 agetty [ 7890] 0 7890 3221 408 69632 0 0 agetty [ 7905] 0 7905 3221 408 69632 0 0 agetty [ 7928] 0 7928 3165 411 73728 0 0 agetty [ 7931] 0 7931 3221 437 69632 0 0 agetty [ 7939] 0 7939 3221 391 73728 0 0 agetty [ 8114] 0 8114 17490 1622 180224 0 0 sshd [ 8116] 0 8116 4360 1 32768 0 0 syz-executor407 [ 8127] 0 8127 4360 524 45056 0 1000 syz-executor407 Out of memory: Kill process 8127 (syz-executor407) score 1000 or sacrifice child Killed process 8127 (syz-executor407) total-vm:17440kB, anon-rss:2096kB, file-rss:0kB, shmem-rss:0kB oom_reaper: reaped process 8127 (syz-executor407), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8128 Comm: syz-executor407 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3088 [inline] prepare_alloc_pages mm/page_alloc.c:4346 [inline] __alloc_pages_nodemask+0x239/0x2890 mm/page_alloc.c:4393 alloc_pages_vma+0xf2/0x780 mm/mempolicy.c:2161 wp_page_copy+0x219/0x2c40 mm/memory.c:2605 do_wp_page+0x2d4/0x2210 mm/memory.c:2903 handle_pte_fault mm/memory.c:4191 [inline] __handle_mm_fault+0x258b/0x41c0 mm/memory.c:4299 handle_mm_fault+0x436/0xb10 mm/memory.c:4336 __do_page_fault+0x68e/0xd60 arch/x86/mm/fault.c:1412 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7ff36c145e25 Code: 0a 00 00 74 08 84 c9 0f 85 46 02 00 00 45 31 e4 0f 1f 44 00 00 64 8b 04 25 18 00 00 00 ba 01 00 00 00 85 c0 0f 85 d5 01 00 00 <0f> b1 15 1c b0 0a 00 4c 8b 33 4d 85 f6 75 3b e9 72 01 00 00 0f 1f RSP: 002b:00007ffe94535740 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ff36c1ee140 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 00007ff36c1ee140 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 syz-executor407 invoked oom-killer: gfp_mask=0x0(), nodemask=(null), order=0, oom_score_adj=1000 syz-executor407 cpuset=/ mems_allowed=0-1 CPU: 0 PID: 8128 Comm: syz-executor407 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 dump_header+0x15d/0xc3f mm/oom_kill.c:443 oom_kill_process.cold+0x10/0x692 mm/oom_kill.c:956 out_of_memory mm/oom_kill.c:1132 [inline] out_of_memory+0x34d/0x1390 mm/oom_kill.c:1064 pagefault_out_of_memory+0x102/0x120 mm/oom_kill.c:1157 mm_fault_error+0x106/0x390 arch/x86/mm/fault.c:1040 __do_page_fault+0xc34/0xd60 arch/x86/mm/fault.c:1440 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7ff36c145e25 Code: 0a 00 00 74 08 84 c9 0f 85 46 02 00 00 45 31 e4 0f 1f 44 00 00 64 8b 04 25 18 00 00 00 ba 01 00 00 00 85 c0 0f 85 d5 01 00 00 <0f> b1 15 1c b0 0a 00 4c 8b 33 4d 85 f6 75 3b e9 72 01 00 00 0f 1f RSP: 002b:00007ffe94535740 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ff36c1ee140 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 00007ff36c1ee140 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 Mem-Info: active_anon:2984 inactive_anon:4720 isolated_anon:0 active_file:5309 inactive_file:11938 isolated_file:0 unevictable:0 dirty:7919 writeback:0 unstable:0 slab_reclaimable:16185 slab_unreclaimable:112308 mapped:3748 shmem:4898 pagetables:339 bounce:0 free:1531373 free_pcp:565 free_cma:0 Node 0 active_anon:11936kB inactive_anon:18880kB active_file:21116kB inactive_file:47752kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:14992kB dirty:31668kB writeback:0kB shmem:19592kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2048kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 1 active_anon:0kB inactive_anon:0kB active_file:120kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:8kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 0 DMA free:15908kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2693 2695 2695 2695 Node 0 DMA32 free:2070012kB min:35996kB low:44992kB high:53988kB active_anon:11936kB inactive_anon:18880kB active_file:21116kB inactive_file:47752kB unevictable:0kB writepending:31668kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:6528kB pagetables:1356kB bounce:0kB free_pcp:2256kB local_pcp:1108kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 1 Normal free:4039876kB min:53876kB low:67344kB high:80812kB active_anon:0kB inactive_anon:0kB active_file:120kB inactive_file:0kB unevictable:0kB writepending:8kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 1313*4kB (U) 63*8kB (UM) 426*16kB (UM) 213*32kB (UM) 41*64kB (UME) 9*128kB (UM) 6*256kB (UME) 2*512kB (UM) 4*1024kB (UME) 4*2048kB (UME) 496*4096kB (M) = 2069628kB Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB Node 1 Normal: 93*4kB (UE) 414*8kB (UE) 292*16kB (UME) 77*32kB (UME) 28*64kB (UME) 9*128kB (UM) 9*256kB (UM) 7*512kB (UM) 4*1024kB (UME) 1*2048kB (U) 980*4096kB (M) = 4039876kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 22148 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 2097051 pages RAM 0 pages HighMem/MovableOnly 369649 pages reserved 0 pages cma reserved Unreclaimable slab info: Name Used Total TIPC 1KB 7KB SCTPv6 2KB 6KB DCCPv6 2KB 7KB DCCP 2KB 7KB RXRPC 1KB 6KB rxrpc_call_jar 11KB 15KB fib6_nodes 0KB 4KB ip6_dst_cache 3KB 3KB RAWv6 10KB 13KB UDPv6 13KB 15KB TCPv6 6KB 6KB nf_conntrack 18KB 26KB t10_alua_lu_gp_cache 0KB 3KB sd_ext_cdb 0KB 7KB scsi_sense_cache 1056KB 1060KB virtio_scsi_cmd 16KB 16KB sgpool-128 8KB 8KB sgpool-64 4KB 12KB sgpool-32 2KB 15KB sgpool-16 1KB 7KB sgpool-8 0KB 7KB mqueue_inode_cache 1KB 7KB bio_post_read_ctx 14KB 15KB bio-2 14KB 15KB jfs_mp 7KB 7KB cifs_small_rq 15KB 16KB cifs_request 67KB 67KB cifs_mpx_ids 0KB 7KB nfs_commit_data 3KB 14KB nfs_write_data 34KB 44KB ext4_system_zone 1KB 7KB bio-1 1KB 7KB rpc_buffers 17KB 25KB rpc_tasks 2KB 7KB UNIX 390KB 397KB tcp_bind_bucket 0KB 4KB ip_fib_trie 0KB 3KB ip_fib_alias 0KB 3KB ip_dst_cache 2KB 8KB RAW 6KB 7KB UDP 25KB 47KB TCP 5KB 11KB hugetlbfs_inode_cache 3KB 15KB fscache_cookie_jar 1KB 7KB eventpoll_pwq 20KB 75KB eventpoll_epi 21KB 90KB inotify_inode_mark 6KB 7KB request_queue 207KB 279KB blkdev_requests 1KB 3KB blkdev_ioc 4KB 15KB bio-0 70KB 127KB biovec-max 1237KB 1237KB biovec-64 16KB 39KB biovec-16 3KB 22KB bio_integrity_payload 1KB 8KB khugepaged_mm_slot 0KB 3KB uid_cache 1KB 12KB dmaengine-unmap-2 0KB 3KB skbuff_fclone_cache 585KB 585KB skbuff_head_cache 2028KB 2231KB configfs_dir_cache 3KB 7KB file_lock_cache 94KB 102KB file_lock_ctx 9KB 11KB fsnotify_mark_connector 2KB 7KB shmem_inode_cache 7816KB 7820KB task_delay_info 73KB 363KB taskstats 0KB 3KB proc_dir_entry 302KB 307KB pde_opener 27KB 73KB seq_file 319KB 661KB sigqueue 23KB 59KB kernfs_node_cache 9949KB 9965KB mnt_cache 68KB 76KB filp 10610KB 10612KB names_cache 177076KB 177097KB iint_cache 79KB 79KB key_jar 4KB 7KB nsproxy 0KB 3KB vm_area_struct 1878KB 1914KB mm_struct 196KB 461KB fs_cache 61KB 280KB files_cache 141KB 356KB signal_cache 464KB 1221KB sighand_cache 478KB 548KB task_struct 1849KB 1849KB cred_jar 1213KB 1984KB anon_vma_chain 664KB 874KB anon_vma 147KB 373KB pid 51KB 300KB Acpi-Operand 157KB 205KB Acpi-ParseExt 8KB 11KB Acpi-Parse 41KB 47KB Acpi-State 52KB 66KB Acpi-Namespace 20KB 27KB numa_policy 0KB 3KB debug_objects_cache 690KB 710KB trace_event_file 297KB 298KB ftrace_event_field 398KB 401KB pool_workqueue 79KB 80KB page->ptl 191KB 482KB kmalloc-2097152 2050KB 2050KB kmalloc-524288 2056KB 2056KB kmalloc-262144 1290KB 1290KB kmalloc-131072 650KB 650KB kmalloc-65536 264KB 330KB kmalloc-32768 660KB 660KB kmalloc-16384 247KB 280KB kmalloc-8192 1122KB 1163KB kmalloc-4096 8385KB 8444KB kmalloc-2048 6848KB 6853KB kmalloc-1024 3965KB 4008KB kmalloc-512 3036KB 4372KB kmalloc-256 1930KB 2388KB kmalloc-128 439KB 500KB kmalloc-96 2573KB 2596KB kmalloc-64 2352KB 2476KB kmalloc-32 1048KB 1901KB kmalloc-192 976KB 1768KB kmem_cache 177KB 183KB Tasks state (memory values in pages): [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name [ 4695] 0 4695 11524 1755 118784 0 0 systemd-journal [ 4697] 0 4697 10980 976 118784 0 -1000 systemd-udevd [ 6169] 100 6169 30769 998 139264 0 0 systemd-timesyn [ 6180] 0 6180 5115 276 69632 0 0 dhclient [ 7768] 0 7768 63583 842 143360 0 0 rsyslogd [ 7777] 0 7777 6999 589 102400 0 0 cron [ 7815] 0 7815 3221 421 73728 0 0 agetty [ 7829] 0 7829 17490 1612 180224 0 -1000 sshd [ 7884] 0 7884 3221 436 73728 0 0 agetty [ 7890] 0 7890 3221 408 69632 0 0 agetty [ 7905] 0 7905 3221 408 69632 0 0 agetty [ 7928] 0 7928 3165 411 73728 0 0 agetty [ 7931] 0 7931 3221 437 69632 0 0 agetty [ 7939] 0 7939 3221 391 73728 0 0 agetty [ 8114] 0 8114 17490 1622 180224 0 0 sshd [ 8116] 0 8116 4360 1 32768 0 0 syz-executor407 [ 8128] 0 8128 4360 524 45056 0 1000 syz-executor407 Out of memory: Kill process 8128 (syz-executor407) score 1000 or sacrifice child Killed process 8128 (syz-executor407) total-vm:17440kB, anon-rss:2096kB, file-rss:0kB, shmem-rss:0kB oom_reaper: reaped process 8128 (syz-executor407), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 8129 Comm: syz-executor407 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3088 [inline] prepare_alloc_pages mm/page_alloc.c:4346 [inline] __alloc_pages_nodemask+0x239/0x2890 mm/page_alloc.c:4393 alloc_pages_vma+0xf2/0x780 mm/mempolicy.c:2161 wp_page_copy+0x219/0x2c40 mm/memory.c:2605 do_wp_page+0x2d4/0x2210 mm/memory.c:2903 handle_pte_fault mm/memory.c:4191 [inline] __handle_mm_fault+0x258b/0x41c0 mm/memory.c:4299 handle_mm_fault+0x436/0xb10 mm/memory.c:4336 __do_page_fault+0x68e/0xd60 arch/x86/mm/fault.c:1412 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7ff36c145e25 Code: 0a 00 00 74 08 84 c9 0f 85 46 02 00 00 45 31 e4 0f 1f 44 00 00 64 8b 04 25 18 00 00 00 ba 01 00 00 00 85 c0 0f 85 d5 01 00 00 <0f> b1 15 1c b0 0a 00 4c 8b 33 4d 85 f6 75 3b e9 72 01 00 00 0f 1f RSP: 002b:00007ffe94535740 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ff36c1ee140 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 00007ff36c1ee140 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 syz-executor407 invoked oom-killer: gfp_mask=0x0(), nodemask=(null), order=0, oom_score_adj=1000 syz-executor407 cpuset=/ mems_allowed=0-1 CPU: 1 PID: 8129 Comm: syz-executor407 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 dump_header+0x15d/0xc3f mm/oom_kill.c:443 oom_kill_process.cold+0x10/0x692 mm/oom_kill.c:956 out_of_memory mm/oom_kill.c:1132 [inline] out_of_memory+0x34d/0x1390 mm/oom_kill.c:1064 pagefault_out_of_memory+0x102/0x120 mm/oom_kill.c:1157 mm_fault_error+0x106/0x390 arch/x86/mm/fault.c:1040 __do_page_fault+0xc34/0xd60 arch/x86/mm/fault.c:1440 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7ff36c145e25