program: r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000140)='/dev/comedi4\x00', 0x2, 0x0) syz_mount_image$ocfs2(&(0x7f0000004440), &(0x7f0000000040)='./file1\x00', 0x88c0, &(0x7f00000007c0)=ANY=[@ANYBLOB="61636c2c6865617274626561743d6e6f6e652c6572726f72733d72656d6f756e742d726f2c636f686572656e63793d66756c6c2c636f686572656e63793d66756c6c2c6c6f63616c666c6f636b732c696e74722c6e6f61636c2c0050890e1d2cc1bbbdf08d08fe06ff2766758d8955927fab01a7ccdecfc59b2041a9461723f1db971e775e0e358c03b00c510998283ed6f1dba0502d352e58b65a28492b0a7053e14eccd84ac5b3452602d77c0ca06fcbf3756ab0c1000b6cd9257f69726afcec2859414f3e35e002dcdf2b18b581c33cd87be229bc4302b017e3c3"], 0x1, 0x442a, 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open(&(0x7f0000000180)='./bus\x00', 0x14937e, 0x111) mount(&(0x7f0000000280)=@loop={'/dev/loop', 0x0}, &(0x7f0000000140)='./bus\x00', 0x0, 0x5000, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x40042, 0x0) pwrite64(r1, &(0x7f0000000540)="9e", 0x1, 0xfecf) r2 = open(&(0x7f000001f580)='./file1\x00', 0x145142, 0x0) ftruncate(r2, 0x96ef) syz_mount_image$msdos(&(0x7f0000000f40), &(0x7f0000000f00)='.\x00', 0x1a4a438, &(0x7f0000000100)=ANY=[], 0xb, 0x0, &(0x7f0000000100)) r3 = open(&(0x7f0000000000)='./bus\x00', 0x0, 0x0) ioctl$LOOP_SET_STATUS64(r3, 0x4c04, &(0x7f00000003c0)={0x0, 0x0, 0x0, 0x1, 0x8005, 0x0, 0x0, 0x19, 0xd, "ef359f413bb93852f7d6a4ae6dddfbd1ce5d29c2ee5e5ca9000ff8ee09e737ff0edf110ff4117639c2eb4b78c660e677df701905b9aafab4afaaf755a3f6a004", "036c47c6780820d1cbf7966d61fdcf335263bd9bffbcc2542ded71038259ca171ce1a311ef54ec32d71e14ef3dc177e9b48b00", "f28359738e229a4c66810000000000d300e6d602000000000000000000000001", [0x8]}) r4 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./file1\x00', 0x105042, 0x1ff) mmap$IORING_OFF_SQ_RING(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x4, 0x11, r4, 0x0) r5 = openat$vimc0(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$VIDIOC_G_CROP(r5, 0xc014563b, &(0x7f0000000040)={0xa, {0x5, 0xf, 0x377, 0x8}}) mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x3000007, 0x13, r0, 0x0) syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0) [ 100.636730][ T5352] Bluetooth: hci0: command tx timeout [ 100.989756][ T5372] loop0: detected capacity change from 0 to 32768 [ 101.001142][ T5372] ======================================================= [ 101.001142][ T5372] WARNING: The mand mount option has been deprecated and [ 101.001142][ T5372] and is ignored by this kernel. Remove the mand [ 101.001142][ T5372] option from the mount to silence this warning. [ 101.001142][ T5372] ======================================================= [ 101.079436][ T5372] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 101.130595][ T5372] (syz.0.0,5372,0):ocfs2_check_set_options:1244 ERROR: Invalid heartbeat mount options [ 101.165963][ T5372] loop0: detected capacity change from 32768 to 64 [ 101.188817][ T5373] (syz.0.0,5373,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.192118][ T5373] (syz.0.0,5373,0):ocfs2_assign_bh:2417 ERROR: status = -12 [ 101.195348][ T5373] (syz.0.0,5373,0):ocfs2_inode_lock_full_nested:2512 ERROR: status = -12 [ 101.210603][ T5373] (syz.0.0,5373,0):ocfs2_inode_lock_atime:2602 ERROR: status = -12 [ 101.214307][ T5373] (syz.0.0,5373,0):ocfs2_mmap_prepare:170 ERROR: status = -12 [ 101.220776][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.224423][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.228815][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.232692][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 0 [ 101.239772][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.242956][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.246527][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.250052][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 0 [ 101.256769][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.260962][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.264141][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.267917][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 1 [ 101.272702][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.277744][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.293026][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.298000][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 2 [ 101.302609][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.311991][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.315192][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.325289][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 3 [ 101.331086][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.334391][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.338898][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.342492][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 4 [ 101.347551][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.350851][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.354118][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.359478][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 5 [ 101.364130][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.367546][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.370749][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.374390][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 6 [ 101.380020][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.383279][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.386858][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.390409][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 7 [ 101.395309][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.401781][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.405114][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.409544][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 0 [ 101.414435][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.418528][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.421676][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.425126][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 1 [ 101.430821][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.434156][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.438228][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.441837][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 2 [ 101.446810][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.450065][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.453373][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.457611][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 3 [ 101.463050][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.467196][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.478849][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.487047][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 4 [ 101.497610][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.503954][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.507797][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.511448][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 5 [ 101.519013][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.522145][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.527199][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.530778][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 6 [ 101.536906][ T5372] (syz.0.0,5372,0):ocfs2_read_blocks:239 ERROR: status = -12 [ 101.540238][ T5372] (syz.0.0,5372,0):ocfs2_get_clusters:627 ERROR: status = -12 [ 101.543754][ T5372] (syz.0.0,5372,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -12 [ 101.547767][ T5372] (syz.0.0,5372,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff8880451c4fb8, block: 7 [ 101.552439][ T5372] ================================================================== [ 101.555866][ T5372] BUG: KASAN: slab-use-after-free in ocfs2_fault+0xd3/0x3f0 [ 101.559102][ T5372] Read of size 8 at addr ffff888011f7c058 by task syz.0.0/5372 [ 101.562347][ T5372] [ 101.563394][ T5372] CPU: 0 UID: 0 PID: 5372 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 101.563409][ T5372] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 101.563417][ T5372] Call Trace: [ 101.563423][ T5372] [ 101.563429][ T5372] dump_stack_lvl+0x189/0x250 [ 101.563449][ T5372] ? __kasan_check_byte+0x12/0x40 [ 101.563463][ T5372] ? __pfx_dump_stack_lvl+0x10/0x10 [ 101.563477][ T5372] ? lock_release+0x4b/0x3e0 [ 101.563495][ T5372] ? __virt_addr_valid+0x4a5/0x5c0 [ 101.563511][ T5372] print_report+0xca/0x240 [ 101.563521][ T5372] ? ocfs2_fault+0xd3/0x3f0 [ 101.563537][ T5372] kasan_report+0x118/0x150 [ 101.563550][ T5372] ? ocfs2_fault+0xd3/0x3f0 [ 101.563565][ T5372] ocfs2_fault+0xd3/0x3f0 [ 101.563581][ T5372] ? __pfx_ocfs2_fault+0x10/0x10 [ 101.563598][ T5372] __do_fault+0x138/0x390 [ 101.563613][ T5372] __handle_mm_fault+0x3611/0x5440 [ 101.563629][ T5372] ? __pfx___handle_mm_fault+0x10/0x10 [ 101.563646][ T5372] ? find_vma+0xe7/0x160 [ 101.563657][ T5372] ? __pfx_find_vma+0x10/0x10 [ 101.563669][ T5372] handle_mm_fault+0x40a/0x8e0 [ 101.563683][ T5372] do_user_addr_fault+0x764/0x1390 [ 101.563697][ T5372] exc_page_fault+0x76/0xf0 [ 101.563753][ T5372] asm_exc_page_fault+0x26/0x30 [ 101.563766][ T5372] RIP: 0010:strncpy_from_user+0xb7/0x290 [ 101.563783][ T5372] Code: 00 00 4c 89 f6 e8 a9 05 bf fc 49 83 fe 07 0f 86 9d 00 00 00 48 89 1c 24 4c 89 74 24 08 48 c7 c5 f8 ff ff ff 45 31 e4 4c 89 fb <4f> 8b 34 27 48 b8 ff fe fe fe fe fe fe fe 4d 8d 3c 06 4d 89 f5 49 [ 101.563794][ T5372] RSP: 0018:ffffc9000d287d30 EFLAGS: 00050246 [ 101.563812][ T5372] RAX: ffffffff8500bc77 RBX: 0000200000000000 RCX: ffff88801fb1c880 [ 101.563820][ T5372] RDX: 0000000000000002 RSI: 0000000000000fe0 RDI: 0000000000000007 [ 101.563827][ T5372] RBP: fffffffffffffff8 R08: ffff888012b1b1ff R09: 1ffff1100256363f [ 101.563835][ T5372] R10: dffffc0000000000 R11: ffffed1002563640 R12: 0000000000000000 [ 101.563844][ T5372] R13: dffffc0000000000 R14: 0000000000000fe0 R15: 0000200000000000 [ 101.563855][ T5372] ? strncpy_from_user+0x97/0x290 [ 101.563872][ T5372] getname_flags+0xf3/0x540 [ 101.563887][ T5372] do_sys_openat2+0xbc/0x1c0 [ 101.563905][ T5372] ? __pfx_do_sys_openat2+0x10/0x10 [ 101.563923][ T5372] ? rcu_is_watching+0x15/0xb0 [ 101.563936][ T5372] __x64_sys_openat+0x138/0x170 [ 101.563948][ T5372] do_syscall_64+0xfa/0x3b0 [ 101.563959][ T5372] ? lockdep_hardirqs_on+0x9c/0x150 [ 101.563969][ T5372] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 101.563979][ T5372] ? clear_bhb_loop+0x60/0xb0 [ 101.563991][ T5372] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 101.564001][ T5372] RIP: 0033:0x7f1b22d8eec9 [ 101.564012][ T5372] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 101.564021][ T5372] RSP: 002b:00007f1b23c5e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 101.564032][ T5372] RAX: ffffffffffffffda RBX: 00007f1b22fe5fa0 RCX: 00007f1b22d8eec9 [ 101.564040][ T5372] RDX: 0000000000000002 RSI: 0000200000000000 RDI: ffffffffffffff9c [ 101.564047][ T5372] RBP: 00007f1b22e11f91 R08: 0000000000000000 R09: 0000000000000000 [ 101.564054][ T5372] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 101.564061][ T5372] R13: 00007f1b22fe6038 R14: 00007f1b22fe5fa0 R15: 00007ffc10c71fb8 [ 101.564070][ T5372] [ 101.564074][ T5372] [ 101.706802][ T5372] Allocated by task 5373: [ 101.708779][ T5372] kasan_save_track+0x3e/0x80 [ 101.710917][ T5372] __kasan_slab_alloc+0x6c/0x80 [ 101.713150][ T5372] kmem_cache_alloc_noprof+0x1c1/0x3c0 [ 101.715564][ T5372] vm_area_alloc+0x24/0x140 [ 101.717621][ T5372] mmap_region+0xdc7/0x20c0 [ 101.719680][ T5372] do_mmap+0xc45/0x10d0 [ 101.721592][ T5372] vm_mmap_pgoff+0x2a6/0x4d0 [ 101.723677][ T5372] ksys_mmap_pgoff+0x51f/0x760 [ 101.725891][ T5372] do_syscall_64+0xfa/0x3b0 [ 101.727952][ T5372] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 101.730592][ T5372] [ 101.731689][ T5372] Freed by task 5372: [ 101.733486][ T5372] kasan_save_track+0x3e/0x80 [ 101.735602][ T5372] kasan_save_free_info+0x46/0x50 [ 101.737917][ T5372] __kasan_slab_free+0x5b/0x80 [ 101.740066][ T5372] slab_free_after_rcu_debug+0x129/0x2a0 [ 101.742589][ T5372] rcu_core+0xcab/0x1770 [ 101.744532][ T5372] handle_softirqs+0x283/0x870 [ 101.746676][ T5372] __irq_exit_rcu+0xca/0x1f0 [ 101.748764][ T5372] irq_exit_rcu+0x9/0x30 [ 101.750694][ T5372] sysvec_apic_timer_interrupt+0xa6/0xc0 [ 101.753235][ T5372] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 101.755902][ T5372] [ 101.757020][ T5372] Last potentially related work creation: [ 101.759543][ T5372] kasan_save_stack+0x3e/0x60 [ 101.761693][ T5372] kasan_record_aux_stack+0xbd/0xd0 [ 101.764071][ T5372] kmem_cache_free+0x2f6/0x400 [ 101.766238][ T5372] vms_complete_munmap_vmas+0x626/0x8a0 [ 101.768743][ T5372] mmap_region+0x11db/0x20c0 [ 101.770826][ T5372] do_mmap+0xc45/0x10d0 [ 101.772735][ T5372] vm_mmap_pgoff+0x2a6/0x4d0 [ 101.774820][ T5372] ksys_mmap_pgoff+0x51f/0x760 [ 101.776990][ T5372] do_syscall_64+0xfa/0x3b0 [ 101.779043][ T5372] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 101.781703][ T5372] [ 101.782823][ T5372] The buggy address belongs to the object at ffff888011f7c000 [ 101.782823][ T5372] which belongs to the cache vm_area_struct of size 256 [ 101.788987][ T5372] The buggy address is located 88 bytes inside of [ 101.788987][ T5372] freed 256-byte region [ffff888011f7c000, ffff888011f7c100) [ 101.794878][ T5372] [ 101.795966][ T5372] The buggy address belongs to the physical page: [ 101.798725][ T5372] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11f7c [ 101.802210][ T5372] memcg:ffff88801e907c01 [ 101.804002][ T5372] ksm flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) [ 101.807279][ T5372] page_type: f5(slab) [ 101.809059][ T5372] raw: 00fff00000000000 ffff888030412b40 ffffea00004619c0 dead000000000003 [ 101.812777][ T5372] raw: 0000000000000000 00000000000c000c 00000000f5000000 ffff88801e907c01 [ 101.816538][ T5372] page dumped because: kasan: bad access detected [ 101.819317][ T5372] page_owner tracks the page as allocated [ 101.821795][ T5372] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 4736, tgid 4736 (rcS), ts 28442666141, free_ts 28435974730 [ 101.829550][ T5372] post_alloc_hook+0x240/0x2a0 [ 101.831618][ T5372] get_page_from_freelist+0x21e4/0x22c0 [ 101.834073][ T5372] __alloc_frozen_pages_noprof+0x181/0x370 [ 101.836564][ T5372] alloc_pages_mpol+0x232/0x4a0 [ 101.838632][ T5372] allocate_slab+0x8a/0x370 [ 101.840565][ T5372] ___slab_alloc+0xbeb/0x1420 [ 101.842616][ T5372] kmem_cache_alloc_noprof+0x283/0x3c0 [ 101.845055][ T5372] vm_area_alloc+0x24/0x140 [ 101.846892][ T5372] mmap_region+0xdc7/0x20c0 [ 101.848727][ T5372] do_mmap+0xc45/0x10d0 [ 101.850433][ T5372] vm_mmap_pgoff+0x2a6/0x4d0 [ 101.852274][ T5372] ksys_mmap_pgoff+0x51f/0x760 [ 101.854198][ T5372] do_syscall_64+0xfa/0x3b0 [ 101.856029][ T5372] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 101.858400][ T5372] page last free pid 15 tgid 15 stack trace: [ 101.860728][ T5372] __free_frozen_pages+0xbc4/0xd30 [ 101.862834][ T5372] __tlb_remove_table+0x2d2/0x3b0 [ 101.864885][ T5372] tlb_remove_table_rcu+0x85/0x100 [ 101.867217][ T5372] rcu_core+0xcab/0x1770 [ 101.869193][ T5372] handle_softirqs+0x283/0x870 [ 101.871344][ T5372] run_ksoftirqd+0x9b/0x100 [ 101.873363][ T5372] smpboot_thread_fn+0x53f/0xa60 [ 101.875515][ T5372] kthread+0x70e/0x8a0 [ 101.877312][ T5372] ret_from_fork+0x439/0x7d0 [ 101.879375][ T5372] ret_from_fork_asm+0x1a/0x30 [ 101.881542][ T5372] [ 101.882607][ T5372] Memory state around the buggy address: [ 101.885098][ T5372] ffff888011f7bf00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 101.888517][ T5372] ffff888011f7bf80: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 101.891937][ T5372] >ffff888011f7c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 101.895418][ T5372] ^ [ 101.898423][ T5372] ffff888011f7c080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 101.901877][ T5372] ffff888011f7c100: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 101.905349][ T5372] ================================================================== [ 101.928584][ T5372] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 101.931638][ T5372] CPU: 0 UID: 0 PID: 5372 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 101.935511][ T5372] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 101.940205][ T5372] Call Trace: [ 101.941740][ T5372] [ 101.943013][ T5372] dump_stack_lvl+0x99/0x250 [ 101.945020][ T5372] ? __asan_memcpy+0x40/0x70 [ 101.947020][ T5372] ? __pfx_dump_stack_lvl+0x10/0x10 [ 101.949262][ T5372] ? __pfx__printk+0x10/0x10 [ 101.951105][ T5372] vpanic+0x281/0x750 [ 101.952746][ T5372] ? preempt_schedule+0xae/0xc0 [ 101.954771][ T5372] ? __pfx_vpanic+0x10/0x10 [ 101.956631][ T5372] ? preempt_schedule_common+0x83/0xd0 [ 101.958870][ T5372] ? preempt_schedule+0xae/0xc0 [ 101.960853][ T5372] ? __pfx_preempt_schedule+0x10/0x10 [ 101.963237][ T5372] panic+0xb9/0xc0 [ 101.964919][ T5372] ? __pfx_panic+0x10/0x10 [ 101.966907][ T5372] ? _raw_spin_unlock_irqrestore+0xfd/0x110 [ 101.969512][ T5372] ? ocfs2_fault+0xd3/0x3f0 [ 101.971573][ T5372] check_panic_on_warn+0x89/0xb0 [ 101.973735][ T5372] ? ocfs2_fault+0xd3/0x3f0 [ 101.975759][ T5372] end_report+0x78/0x160 [ 101.977617][ T5372] kasan_report+0x129/0x150 [ 101.979592][ T5372] ? ocfs2_fault+0xd3/0x3f0 [ 101.981602][ T5372] ocfs2_fault+0xd3/0x3f0 [ 101.983489][ T5372] ? __pfx_ocfs2_fault+0x10/0x10 [ 101.985694][ T5372] __do_fault+0x138/0x390 [ 101.987554][ T5372] __handle_mm_fault+0x3611/0x5440 [ 101.989783][ T5372] ? __pfx___handle_mm_fault+0x10/0x10 [ 101.991872][ T5372] ? find_vma+0xe7/0x160 [ 101.993706][ T5372] ? __pfx_find_vma+0x10/0x10 [ 101.995838][ T5372] handle_mm_fault+0x40a/0x8e0 [ 101.997932][ T5372] do_user_addr_fault+0x764/0x1390 [ 102.000158][ T5372] exc_page_fault+0x76/0xf0 [ 102.002095][ T5372] asm_exc_page_fault+0x26/0x30 [ 102.004276][ T5372] RIP: 0010:strncpy_from_user+0xb7/0x290 [ 102.006714][ T5372] Code: 00 00 4c 89 f6 e8 a9 05 bf fc 49 83 fe 07 0f 86 9d 00 00 00 48 89 1c 24 4c 89 74 24 08 48 c7 c5 f8 ff ff ff 45 31 e4 4c 89 fb <4f> 8b 34 27 48 b8 ff fe fe fe fe fe fe fe 4d 8d 3c 06 4d 89 f5 49 [ 102.014883][ T5372] RSP: 0018:ffffc9000d287d30 EFLAGS: 00050246 [ 102.017581][ T5372] RAX: ffffffff8500bc77 RBX: 0000200000000000 RCX: ffff88801fb1c880 [ 102.021087][ T5372] RDX: 0000000000000002 RSI: 0000000000000fe0 RDI: 0000000000000007 [ 102.024486][ T5372] RBP: fffffffffffffff8 R08: ffff888012b1b1ff R09: 1ffff1100256363f [ 102.027944][ T5372] R10: dffffc0000000000 R11: ffffed1002563640 R12: 0000000000000000 [ 102.031324][ T5372] R13: dffffc0000000000 R14: 0000000000000fe0 R15: 0000200000000000 [ 102.034742][ T5372] ? strncpy_from_user+0x97/0x290 [ 102.037023][ T5372] getname_flags+0xf3/0x540 [ 102.039054][ T5372] do_sys_openat2+0xbc/0x1c0 [ 102.041105][ T5372] ? __pfx_do_sys_openat2+0x10/0x10 [ 102.043359][ T5372] ? rcu_is_watching+0x15/0xb0 [ 102.045455][ T5372] __x64_sys_openat+0x138/0x170 [ 102.047586][ T5372] do_syscall_64+0xfa/0x3b0 [ 102.049584][ T5372] ? lockdep_hardirqs_on+0x9c/0x150 [ 102.051836][ T5372] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 102.054510][ T5372] ? clear_bhb_loop+0x60/0xb0 [ 102.056619][ T5372] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 102.059239][ T5372] RIP: 0033:0x7f1b22d8eec9 [ 102.061166][ T5372] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 102.069484][ T5372] RSP: 002b:00007f1b23c5e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 102.073144][ T5372] RAX: ffffffffffffffda RBX: 00007f1b22fe5fa0 RCX: 00007f1b22d8eec9 [ 102.076499][ T5372] RDX: 0000000000000002 RSI: 0000200000000000 RDI: ffffffffffffff9c [ 102.079944][ T5372] RBP: 00007f1b22e11f91 R08: 0000000000000000 R09: 0000000000000000 [ 102.083360][ T5372] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 102.086806][ T5372] R13: 00007f1b22fe6038 R14: 00007f1b22fe5fa0 R15: 00007ffc10c71fb8 [ 102.090210][ T5372] [ 102.091845][ T5372] Kernel Offset: disabled [ 102.093772][ T5372] Rebooting in 86400 seconds..