R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe684ef3e8 R13: 00007ffe684eefa0 R14: 0000000000000049 R15: 00007ffe684eefa0 Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 3 UID: 0 PID: 5141 Comm: klogd Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 vpanic+0x553/0x970 kernel/panic.c:651 panic+0xd1/0xe0 kernel/panic.c:788 check_panic_on_warn kernel/panic.c:525 [inline] check_panic_on_warn.cold+0x19/0x34 kernel/panic.c:520 __warn.cold+0x191/0x318 kernel/panic.c:1104 __report_bug+0x30f/0x440 lib/bug.c:254 report_bug+0xb3/0x220 lib/bug.c:286 handle_bug+0x16a/0x2a0 arch/x86/kernel/traps.c:436 exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:490 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:593 RIP: 0010:__alloc_pages_slowpath mm/page_alloc.c:4816 [inline] RIP: 0010:__alloc_frozen_pages_noprof+0x1eac/0x3300 mm/page_alloc.c:5449 Code: 38 d0 7c 08 84 d2 0f 85 de 12 00 00 65 48 8b 05 c2 41 1c 13 c7 84 24 94 00 00 00 00 80 00 00 f6 40 2d 08 0f 84 ba e7 ff ff 90 <0f> 0b 90 e9 b1 e7 ff ff 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 RSP: 0018:ffffc9000d27e588 EFLAGS: 00010202 RAX: ffff88800086a580 RBX: 0000000000000000 RCX: 1ffff1100fffad29 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88803fffd938 RBP: ffff88800086a5ac R08: 0000000000008000 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000048c40 R13: ffff88803fffb900 R14: 0000000000000000 R15: 1ffff92001a4fccb alloc_pages_mpol+0x201/0x550 mm/mempolicy.c:2486 alloc_pages_noprof mm/mempolicy.c:2577 [inline] folio_alloc_noprof+0x22/0x250 mm/mempolicy.c:2587 filemap_alloc_folio_noprof.part.0+0x3db/0x440 mm/filemap.c:1019 filemap_alloc_folio_noprof mm/filemap.c:2033 [inline] __filemap_get_folio_mpol+0x653/0x1280 mm/filemap.c:2018 __filemap_get_folio include/linux/pagemap.h:761 [inline] ext4_mb_load_buddy_gfp+0x70d/0x1b20 fs/ext4/mballoc.c:1732 ext4_discard_preallocations+0x584/0x10c0 fs/ext4/mballoc.c:5686 ext4_clear_inode+0x6e/0x280 fs/ext4/super.c:1547 ext4_evict_inode+0x1de/0x17d0 fs/ext4/inode.c:333 evict+0x3c2/0xad0 fs/inode.c:822 dispose_list+0x117/0x1e0 fs/inode.c:864 prune_icache_sb+0xea/0x150 fs/inode.c:1010 super_cache_scan+0x376/0x550 fs/super.c:227 do_shrink_slab+0x416/0x1200 mm/shrinker.c:445 shrink_slab_memcg mm/shrinker.c:562 [inline] shrink_slab+0xa82/0x12e0 mm/shrinker.c:640 shrink_node_memcgs mm/vmscan.c:6222 [inline] shrink_node+0x812/0x4320 mm/vmscan.c:6264 shrink_zones mm/vmscan.c:6503 [inline] do_try_to_free_pages+0x33e/0x16d0 mm/vmscan.c:6565 try_to_free_pages+0x2a0/0x740 mm/vmscan.c:6804 __perform_reclaim mm/page_alloc.c:4451 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4478 [inline] __alloc_pages_slowpath mm/page_alloc.c:4939 [inline] __alloc_frozen_pages_noprof+0xf8a/0x3300 mm/page_alloc.c:5449 alloc_slab_page mm/slub.c:3347 [inline] allocate_slab mm/slub.c:3470 [inline] new_slab+0x1f6/0x6e0 mm/slub.c:3513 refill_objects+0xe3/0x410 mm/slub.c:7418 refill_sheaf mm/slub.c:2885 [inline] __pcs_replace_empty_main+0x35e/0x650 mm/slub.c:4774 alloc_from_pcs mm/slub.c:4850 [inline] slab_alloc_node mm/slub.c:4984 [inline] __do_kmalloc_node mm/slub.c:5413 [inline] __kmalloc_node_track_caller_noprof+0x6a8/0x870 mm/slub.c:5545 kmalloc_reserve+0xe8/0x350 net/core/skbuff.c:637 __alloc_skb+0x185/0x710 net/core/skbuff.c:715 alloc_skb include/linux/skbuff.h:1384 [inline] alloc_skb_with_frags+0xdd/0x760 net/core/skbuff.c:6799 sock_alloc_send_pskb+0x801/0x980 net/core/sock.c:3022 unix_dgram_sendmsg+0x3c7/0x1810 net/unix/af_unix.c:2144 sock_sendmsg_nosec net/socket.c:800 [inline] __sock_sendmsg net/socket.c:815 [inline] __sys_sendto+0x48b/0x4e0 net/socket.c:2281 __do_sys_sendto net/socket.c:2288 [inline] __se_sys_sendto net/socket.c:2284 [inline] __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2284 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x121/0x770 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f56ff1c2407 Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffe684eee60 EFLAGS: 00000202 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f56ff072c80 RCX: 00007f56ff1c2407 RDX: 0000000000000064 RSI: 00007ffe684eefa0 RDI: 0000000000000003 RBP: 00007ffe684ef3d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe684ef3e8 R13: 00007ffe684eefa0 R14: 0000000000000049 R15: 00007ffe684eefa0 Kernel Offset: disabled Rebooting in 86400 seconds..