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VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVFXbgWAAAAABAmL91FH0bAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPwKAAD//4w3HM8=") r0 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000140)=ANY=[@ANYBLOB="1c0000006800e97800020000000000000a0000000000000004000400"], 0x1c}}, 0x0) (async) sendmsg$nl_route(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000140)=ANY=[@ANYBLOB="1c0000006800e97800020000000000000a0000000000000004000400"], 0x1c}}, 0x0) socket$nl_route(0x10, 0x3, 0x0) (async) r1 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f00000001c0)={&(0x7f00000007c0)=ANY=[@ANYBLOB="240000006800010027bd00000000000c00020001000000040000001d67d01cb6cbadcc19a85d21bdff95f6ad1aa3888747a14f7a47d465e5c61c196b22a0196793ebcf45827e612337bf3069397b8637cf4b0a582ae6ff9769a2693149578fc30ea869354fd75980a3ca36b8ef592df43a942e87153ffdc3a4261ca9043c524714e948892c7872c2448f10f06000847ac5dcae99da8b85f4dc1218fbb3ce4734db54bf3e45d40ec30de7f69b387cfcba487a294b397a7a919389dbe4f3ea3d7ed10b00777396492bb2d85a928d29beed6ee952"], 0x24}}, 0x4000) sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000380)=ANY=[@ANYBLOB="300000001800dd8d00000000000000000a000000000000060000000008001e0002"], 0x30}}, 0x4090) (async) sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000380)=ANY=[@ANYBLOB="300000001800dd8d00000000000000000a000000000000060000000008001e0002"], 0x30}}, 0x4090) sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={0x0, 0x38}, 0x1, 0x300}, 0x0) (async) sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={0x0, 0x38}, 0x1, 0x300}, 0x0) r2 = socket(0x10, 0x3, 0x0) sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f00000001c0)=ANY=[], 0x24}}, 0x0) sendmmsg$alg(r2, &(0x7f0000000140), 0x4924b68, 0x0) r3 = socket$inet6_udplite(0xa, 0x2, 0x88) ioctl$sock_inet6_SIOCADDRT(r3, 0x890b, &(0x7f0000000140)={@mcast2, @mcast1, @private2, 0x0, 0x0, 0x0, 0x0, 0x0, 0xa0022}) r4 = socket$inet_mptcp(0x2, 0x1, 0x106) sendmmsg(r4, &(0x7f0000002840)=[{{0x0, 0x0, 0x0}}], 0x1, 0x20044000) connect$inet(r4, &(0x7f0000000000)={0x2, 0x4e21, @remote}, 0x10) socket$nl_generic(0x10, 0x3, 0x10) (async) r5 = socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$mptcp(&(0x7f00000002c0), 0xffffffffffffffff) (async) r6 = syz_genetlink_get_family_id$mptcp(&(0x7f00000002c0), 0xffffffffffffffff) sendmsg$MPTCP_PM_CMD_ADD_ADDR(r5, &(0x7f0000000480)={0x0, 0x0, &(0x7f0000000440)={&(0x7f0000000200)=ANY=[@ANYBLOB='(\x00\x00\x00', @ANYRES16=r6, @ANYBLOB="090000000000000008000700000014000180080003007f0000010600010002000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x4) io_setup(0x200, &(0x7f0000000140)) (async) io_setup(0x200, &(0x7f0000000140)) open(&(0x7f0000000080)='./bus\x00', 0x14d27e, 0x0) (async) open(&(0x7f0000000080)='./bus\x00', 0x14d27e, 0x0) bind$inet(0xffffffffffffffff, 0x0, 0x0) bpf$PROG_LOAD_XDP(0x5, 0x0, 0x0) bpf$MAP_UPDATE_ELEM(0x2, 0x0, 0x0) r7 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpu.stat\x00', 0x275a, 0x0) ftruncate(r7, 0x8008976) (async) ftruncate(r7, 0x8008976) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r7, 0x0) (async) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r7, 0x0) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cpu.stat\x00', 0x275a, 0x0) mount(&(0x7f0000000280)=@loop={'/dev/loop', 0x0}, &(0x7f0000000140)='./bus\x00', 0x0, 0x5000, 0x0) r8 = open(&(0x7f0000000000)='./bus\x00', 0x8000, 0xa0) ioctl$LOOP_SET_STATUS64(r8, 0x4c04, &(0x7f0000000540)={0x0, 0x0, 0x0, 0x7fffffffffffffff, 0x200, 0x0, 0x4, 0x5, 0xd, "ef359f413bb93852f7d6a4ae6dddfbd1ce5d29c2ee5e5ca9000ff8ee09e737ff0edf110ff4117639c2eb4b78c660e677df701905b9aafab4afaaf755a3f6a004", "036c47c6780820d1cbf7966d61fdcf335263bd9bffbcc2542ded71038259ca171ce1a311ef54ec32d71e14ef3dc177e9b48b00", "f28359738e229a4c6681d6fe06dcd2cda337d602000000000000000000010001", [0x204]}) [ 109.939860][ T5305] Bluetooth: hci0: command tx timeout [ 110.345079][ T5326] loop0: detected capacity change from 0 to 32768 [ 110.368066][ T5326] ======================================================= [ 110.368066][ T5326] WARNING: The mand mount option has been deprecated and [ 110.368066][ T5326] and is ignored by this kernel. Remove the mand [ 110.368066][ T5326] option from the mount to silence this warning. [ 110.368066][ T5326] ======================================================= [ 110.440968][ T5326] JBD2: Ignoring recovery information on journal [ 110.494478][ T5326] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 110.517794][ T5337] netlink: 12 bytes leftover after parsing attributes in process `syz.0.0'. [ 110.529053][ T5326] netlink: 12 bytes leftover after parsing attributes in process `syz.0.0'. [ 110.534956][ T5326] Zero length message leads to an empty skb [ 110.556886][ T5326] UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list [ 110.596380][ T24] audit: type=1800 audit(1775557425.888:2): pid=5327 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.0" name="bus" dev="loop0" ino=17058 res=0 errno=0 [ 110.617484][ T24] audit: type=1800 audit(1775557425.908:3): pid=5337 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.0" name="bus" dev="loop0" ino=17058 res=0 errno=0 [ 110.636634][ T5337] ================================================================== [ 110.640398][ T5337] BUG: KASAN: slab-use-after-free in ocfs2_fault+0xdb/0x440 [ 110.643976][ T5337] Read of size 8 at addr ffff888036228198 by task syz.0.0/5337 [ 110.647609][ T5337] [ 110.648961][ T5337] CPU: 0 UID: 0 PID: 5337 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 110.648981][ T5337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 110.648990][ T5337] Call Trace: [ 110.648999][ T5337] [ 110.649005][ T5337] dump_stack_lvl+0xe8/0x150 [ 110.649031][ T5337] print_report+0xba/0x230 [ 110.649047][ T5337] ? ocfs2_fault+0xdb/0x440 [ 110.649061][ T5337] kasan_report+0x117/0x150 [ 110.649081][ T5337] ? ocfs2_fault+0xdb/0x440 [ 110.649094][ T5337] ocfs2_fault+0xdb/0x440 [ 110.649107][ T5337] ? __pfx_ocfs2_fault+0x10/0x10 [ 110.649120][ T5337] ? css_rstat_updated+0x23a/0x530 [ 110.649138][ T5337] __do_fault+0x138/0x390 [ 110.649152][ T5337] do_pte_missing+0x228f/0x3490 [ 110.649168][ T5337] ? handle_mm_fault+0xee/0x3310 [ 110.649188][ T5337] handle_mm_fault+0x1bec/0x3310 [ 110.649210][ T5337] ? handle_mm_fault+0xee/0x3310 [ 110.649229][ T5337] ? __pfx_handle_mm_fault+0x10/0x10 [ 110.649245][ T5337] ? follow_page_pte+0x841/0x1450 [ 110.649260][ T5337] ? __pfx_follow_page_pte+0x10/0x10 [ 110.649274][ T5337] __get_user_pages+0x165b/0x29d0 [ 110.649290][ T5337] populate_vma_page_range+0x2be/0x3c0 [ 110.649304][ T5337] ? __pfx_populate_vma_page_range+0x10/0x10 [ 110.649322][ T5337] ? down_read+0x272/0x2e0 [ 110.649395][ T5337] ? __mm_populate+0x173/0x390 [ 110.649412][ T5337] __mm_populate+0x25f/0x390 [ 110.649428][ T5337] ? __pfx___mm_populate+0x10/0x10 [ 110.649449][ T5337] vm_mmap_pgoff+0x3aa/0x4f0 [ 110.649468][ T5337] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 110.649484][ T5337] ? __fget_files+0x2a/0x420 [ 110.649504][ T5337] ? __fget_files+0x3a0/0x420 [ 110.649520][ T5337] ? __fget_files+0x2a/0x420 [ 110.649538][ T5337] ksys_mmap_pgoff+0x51e/0x760 [ 110.649560][ T5337] do_syscall_64+0x14d/0xf80 [ 110.649578][ T5337] ? trace_irq_disable+0x3b/0x150 [ 110.649591][ T5337] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 110.649604][ T5337] ? clear_bhb_loop+0x40/0x90 [ 110.649619][ T5337] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 110.649633][ T5337] RIP: 0033:0x7f46f719c819 [ 110.649649][ T5337] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 110.649661][ T5337] RSP: 002b:00007f46f8060fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 110.649698][ T5337] RAX: ffffffffffffffda RBX: 00007f46f7416180 RCX: 00007f46f719c819 [ 110.649709][ T5337] RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000200000000000 [ 110.649725][ T5337] RBP: 00007f46f7232c91 R08: 000000000000000e R09: 0000000000000000 [ 110.649734][ T5337] R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000 [ 110.649742][ T5337] R13: 00007f46f7416218 R14: 00007f46f7416180 R15: 00007ffd4fc9a018 [ 110.649758][ T5337] [ 110.649764][ T5337] [ 110.783103][ T5337] Allocated by task 5337: [ 110.785294][ T5337] kasan_save_track+0x3e/0x80 [ 110.788021][ T5337] __kasan_slab_alloc+0x6c/0x80 [ 110.790787][ T5337] kmem_cache_alloc_noprof+0x2bc/0x650 [ 110.793315][ T5337] vm_area_alloc+0x24/0x140 [ 110.795495][ T5337] mmap_region+0x10eb/0x2240 [ 110.797735][ T5337] do_mmap+0xc39/0x10c0 [ 110.799772][ T5337] vm_mmap_pgoff+0x2c9/0x4f0 [ 110.802345][ T5337] ksys_mmap_pgoff+0x51e/0x760 [ 110.805301][ T5337] do_syscall_64+0x14d/0xf80 [ 110.807810][ T5337] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 110.810650][ T5337] [ 110.811767][ T5337] Freed by task 5326: [ 110.813741][ T5337] kasan_save_track+0x3e/0x80 [ 110.815984][ T5337] kasan_save_free_info+0x46/0x50 [ 110.818291][ T5337] __kasan_slab_free+0x5c/0x80 [ 110.820938][ T5337] slab_free_after_rcu_debug+0x126/0x220 [ 110.823972][ T5337] rcu_core+0x7cd/0x1070 [ 110.825958][ T5337] handle_softirqs+0x22a/0x870 [ 110.828149][ T5337] __irq_exit_rcu+0x5f/0x150 [ 110.830248][ T5337] irq_exit_rcu+0x9/0x30 [ 110.832284][ T5337] sysvec_apic_timer_interrupt+0xa6/0xc0 [ 110.835512][ T5337] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 110.838997][ T5337] [ 110.840175][ T5337] Last potentially related work creation: [ 110.842855][ T5337] kasan_save_stack+0x3e/0x60 [ 110.845162][ T5337] kasan_record_aux_stack+0xbd/0xd0 [ 110.847581][ T5337] kmem_cache_free+0x426/0x630 [ 110.849668][ T5337] vms_complete_munmap_vmas+0x929/0xc60 [ 110.852298][ T5337] __mmap_complete+0x7b/0x5e0 [ 110.854488][ T5337] mmap_region+0x15a2/0x2240 [ 110.857332][ T5337] do_mmap+0xc39/0x10c0 [ 110.859444][ T5337] vm_mmap_pgoff+0x2c9/0x4f0 [ 110.861616][ T5337] ksys_mmap_pgoff+0x51e/0x760 [ 110.863903][ T5337] do_syscall_64+0x14d/0xf80 [ 110.866036][ T5337] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 110.868808][ T5337] [ 110.870130][ T5337] The buggy address belongs to the object at ffff888036228140 [ 110.870130][ T5337] which belongs to the cache vm_area_struct of size 256 [ 110.877125][ T5337] The buggy address is located 88 bytes inside of [ 110.877125][ T5337] freed 256-byte region [ffff888036228140, ffff888036228240) [ 110.882887][ T5337] [ 110.884164][ T5337] The buggy address belongs to the physical page: [ 110.887439][ T5337] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888036228000 pfn:0x36228 [ 110.892120][ T5337] memcg:ffff888041e4b301 [ 110.893932][ T5337] flags: 0x4fff00000000200(workingset|node=1|zone=1|lastcpupid=0x7ff) [ 110.897477][ T5337] page_type: f5(slab) [ 110.899430][ T5337] raw: 04fff00000000200 ffff888030412500 ffff888030408dc8 ffffea00010b6490 [ 110.903476][ T5337] raw: ffff888036228000 00000008000c000a 00000000f5000000 ffff888041e4b301 [ 110.907537][ T5337] page dumped because: kasan: bad access detected [ 110.910345][ T5337] page_owner tracks the page as allocated [ 110.913168][ T5337] page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4759, tgid 4759 (v4l_id), ts 65944567498, free_ts 65696332020 [ 110.922817][ T5337] post_alloc_hook+0x231/0x280 [ 110.925081][ T5337] get_page_from_freelist+0x24dc/0x2580 [ 110.928039][ T5337] __alloc_frozen_pages_noprof+0x18d/0x380 [ 110.931245][ T5337] allocate_slab+0x77/0x660 [ 110.933454][ T5337] refill_objects+0x331/0x3c0 [ 110.935536][ T5337] __pcs_replace_empty_main+0x2e6/0x730 [ 110.938043][ T5337] kmem_cache_alloc_noprof+0x37d/0x650 [ 110.940403][ T5337] vm_area_dup+0x2b/0x680 [ 110.942300][ T5337] __split_vma+0x1dc/0xa40 [ 110.944329][ T5337] vms_gather_munmap_vmas+0x32d/0x1370 [ 110.946476][ T5337] mmap_region+0x85b/0x2240 [ 110.948243][ T5337] do_mmap+0xc39/0x10c0 [ 110.949837][ T5337] vm_mmap_pgoff+0x2c9/0x4f0 [ 110.951800][ T5337] ksys_mmap_pgoff+0x51e/0x760 [ 110.953898][ T5337] do_syscall_64+0x14d/0xf80 [ 110.956000][ T5337] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 110.958688][ T5337] page last free pid 9 tgid 9 stack trace: [ 110.961496][ T5337] __free_frozen_pages+0xc2b/0xdb0 [ 110.963784][ T5337] vfree+0x25a/0x400 [ 110.965648][ T5337] delayed_vfree_work+0x55/0x80 [ 110.967838][ T5337] process_scheduled_works+0xb6e/0x18c0 [ 110.970175][ T5337] worker_thread+0xa53/0xfc0 [ 110.972281][ T5337] kthread+0x388/0x470 [ 110.974303][ T5337] ret_from_fork+0x51e/0xb90 [ 110.977255][ T5337] ret_from_fork_asm+0x1a/0x30 [ 110.979712][ T5337] [ 110.980788][ T5337] Memory state around the buggy address: [ 110.983223][ T5337] ffff888036228080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 110.986610][ T5337] ffff888036228100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 110.990090][ T5337] >ffff888036228180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 110.994784][ T5337] ^ [ 110.997076][ T5337] ffff888036228200: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 111.000491][ T5337] ffff888036228280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 111.003570][ T5337] ================================================================== [ 111.284115][ T5337] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 111.287351][ T5337] CPU: 0 UID: 0 PID: 5337 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 111.291002][ T5337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 111.295775][ T5337] Call Trace: [ 111.297522][ T5337] [ 111.298846][ T5337] vpanic+0x56c/0xa60 [ 111.300829][ T5337] ? __pfx_vpanic+0x10/0x10 [ 111.303047][ T5337] panic+0xc5/0xd0 [ 111.304742][ T5337] ? __pfx_panic+0x10/0x10 [ 111.306480][ T5337] ? preempt_schedule_thunk+0x16/0x30 [ 111.308777][ T5337] ? ocfs2_fault+0xdb/0x440 [ 111.310635][ T5337] ? preempt_schedule_thunk+0x16/0x30 [ 111.313205][ T5337] ? ocfs2_fault+0xdb/0x440 [ 111.315645][ T5337] check_panic_on_warn+0x89/0xb0 [ 111.318339][ T5337] ? ocfs2_fault+0xdb/0x440 [ 111.320760][ T5337] end_report+0x73/0x180 [ 111.322654][ T5337] ? ocfs2_fault+0xdb/0x440 [ 111.324719][ T5337] kasan_report+0x128/0x150 [ 111.326756][ T5337] ? ocfs2_fault+0xdb/0x440 [ 111.328847][ T5337] ocfs2_fault+0xdb/0x440 [ 111.331033][ T5337] ? __pfx_ocfs2_fault+0x10/0x10 [ 111.333312][ T5337] ? css_rstat_updated+0x23a/0x530 [ 111.335683][ T5337] __do_fault+0x138/0x390 [ 111.338018][ T5337] do_pte_missing+0x228f/0x3490 [ 111.340265][ T5337] ? handle_mm_fault+0xee/0x3310 [ 111.342517][ T5337] handle_mm_fault+0x1bec/0x3310 [ 111.344788][ T5337] ? handle_mm_fault+0xee/0x3310 [ 111.347048][ T5337] ? __pfx_handle_mm_fault+0x10/0x10 [ 111.349975][ T5337] ? follow_page_pte+0x841/0x1450 [ 111.352911][ T5337] ? __pfx_follow_page_pte+0x10/0x10 [ 111.355491][ T5337] __get_user_pages+0x165b/0x29d0 [ 111.357775][ T5337] populate_vma_page_range+0x2be/0x3c0 [ 111.360256][ T5337] ? __pfx_populate_vma_page_range+0x10/0x10 [ 111.363050][ T5337] ? down_read+0x272/0x2e0 [ 111.365302][ T5337] ? __mm_populate+0x173/0x390 [ 111.367675][ T5337] __mm_populate+0x25f/0x390 [ 111.369935][ T5337] ? __pfx___mm_populate+0x10/0x10 [ 111.372326][ T5337] vm_mmap_pgoff+0x3aa/0x4f0 [ 111.374476][ T5337] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 111.377240][ T5337] ? __fget_files+0x2a/0x420 [ 111.379739][ T5337] ? __fget_files+0x3a0/0x420 [ 111.381933][ T5337] ? __fget_files+0x2a/0x420 [ 111.384137][ T5337] ksys_mmap_pgoff+0x51e/0x760 [ 111.386404][ T5337] do_syscall_64+0x14d/0xf80 [ 111.388523][ T5337] ? trace_irq_disable+0x3b/0x150 [ 111.391051][ T5337] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 111.395266][ T5337] ? clear_bhb_loop+0x40/0x90 [ 111.397669][ T5337] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 111.400416][ T5337] RIP: 0033:0x7f46f719c819 [ 111.402376][ T5337] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 111.411510][ T5337] RSP: 002b:00007f46f8060fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 111.415954][ T5337] RAX: ffffffffffffffda RBX: 00007f46f7416180 RCX: 00007f46f719c819 [ 111.419435][ T5337] RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000200000000000 [ 111.422924][ T5337] RBP: 00007f46f7232c91 R08: 000000000000000e R09: 0000000000000000 [ 111.426945][ T5337] R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000 [ 111.431206][ T5337] R13: 00007f46f7416218 R14: 00007f46f7416180 R15: 00007ffd4fc9a018 [ 111.434815][ T5337] [ 111.436845][ T5337] Kernel Offset: disabled [ 111.438769][ T5337] Rebooting in 86400 seconds..