program: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./dev\x00', &(0x7f0000000140)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./sys/module/md_mod/parameters/new_array\x00', 0x1, 0x0) write(r0, &(0x7f0000000200)='md0', 0x3) r1 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./dev/md0\x00', 0x4002, 0x0) ioctl(r1, 0x40480923, &(0x7f0000000380)="000000000000000000000000000000000a000000000400000200000002000000000000000100000000000000000000000000000000000000000000000000000002010000000001") ioctl(r1, 0x40140921, &(0x7f0000000420)="0100000001000000010000000100000006") ioctl(r1, 0x400c0930, 0x0) ioctl(r1, 0x928, 0x0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$netlbl_unlabel(&(0x7f0000000000), r2) sendmsg$NLBL_UNLABEL_C_STATICADDDEF(r2, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000300)={0x44, r3, 0x1, 0x0, 0x0, {}, [@NLBL_UNLABEL_A_IPV4ADDR={0x8, 0x4, @loopback}, @NLBL_UNLABEL_A_SECCTX={0xf, 0x7, 'unconfined\x00'}, @NLBL_UNLABEL_A_IPV4MASK={0x8, 0x5, @loopback}]}, 0x44}}, 0x0) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r5 = syz_genetlink_get_family_id$netlbl_unlabel(&(0x7f0000000140), r4) sendmsg$NLBL_UNLABEL_C_STATICLISTDEF(r2, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000500)={&(0x7f0000000600)=ANY=[@ANYBLOB="14000000", @ANYRES16=r5, @ANYBLOB="01030000000001e8888a779ab414"], 0x14}}, 0x24044804) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r6 = socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$team(&(0x7f00000044c0), 0xffffffffffffffff) ioctl$ifreq_SIOCGIFINDEX_team(r6, 0x8933, &(0x7f0000004700)) socket$nl_generic(0x10, 0x3, 0x10) syz_mount_image$nilfs2(&(0x7f0000000a40), &(0x7f0000000a80)='./file0\x00', 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB="00a717cf64394a00dc299b573660f498c4d99aac48af10923f703f53e58070c2bf4575228d0e471df7101ac03b8d48a1b0fc276e395f25b63e9a27cd2ab98888989eec154d97b4dbcf"], 0x1, 0xa09, &(0x7f0000001540)="$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") mount(0x0, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000080)='tmpfs\x00', 0x0, &(0x7f00000001c0)='grpquota') r7 = creat(&(0x7f0000000140)='./file0/file0\x00', 0x66) quotactl_fd$Q_SETINFO(r7, 0xffffffff80000601, 0x0, &(0x7f0000000300)={0x5, 0x2, 0x1}) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f00000018c0)={0x1, &(0x7f0000000100)=[{0x6, 0x0, 0x0, 0x7fff0000}]}) r8 = syz_genetlink_get_family_id$nl802154(&(0x7f0000000240), r2) sendmsg$NL802154_CMD_SET_WPAN_PHY_NETNS(r4, &(0x7f0000000340)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000002c0)={&(0x7f0000000280)={0x3c, r8, 0x20, 0x70bd25, 0x25dfdbff, {}, [@NL802154_ATTR_WPAN_DEV={0xc, 0x6, 0x2}, @NL802154_ATTR_WPAN_DEV={0xc, 0x6, 0x100000001}, @NL802154_ATTR_WPAN_PHY={0x8, 0x1, 0x1}, @NL802154_ATTR_NETNS_FD={0x8, 0x1d, r7}]}, 0x3c}, 0x1, 0x0, 0x0, 0x4480}, 0x800) umount2(&(0x7f0000000040)='.\x00', 0x2) [ 95.021558][ T4651] Bluetooth: hci0: command tx timeout [ 95.174717][ T5326] md: async del_gendisk mode will be removed in future, please upgrade to mdadm-4.5+ [ 95.176126][ T5327] md: async del_gendisk mode will be removed in future, please upgrade to mdadm-4.5+ [ 95.176240][ T5327] block device autoloading is deprecated and will be removed. [ 95.265043][ T5326] md/raid10:md0: not clean -- starting background reconstruction [ 95.265059][ T5326] md/raid10:md0: active with 1 out of 2 devices [ 95.266581][ T5326] md0: detected capacity change from 0 to 2048 [ 95.275325][ T5333] md: resync of RAID array md0 [ 95.282270][ T5326] [ 95.293678][ T5326] ====================================================== [ 95.296794][ T5326] WARNING: possible circular locking dependency detected [ 95.299812][ T5326] syzkaller #0 Not tainted [ 95.301808][ T5326] ------------------------------------------------------ [ 95.305728][ T5326] syz.0.0/5326 is trying to acquire lock: [ 95.308223][ T5326] ffffffff8f554980 (major_names_lock){+.+.}-{4:4}, at: blk_request_module+0x35/0x2a0 [ 95.312250][ T5326] [ 95.312250][ T5326] but task is already holding lock: [ 95.315389][ T5326] ffff88801f5c6358 (&mddev->reconfig_mutex){+.+.}-{4:4}, at: mddev_suspend_and_lock+0x48/0xf0 [ 95.319932][ T5326] [ 95.319932][ T5326] which lock already depends on the new lock. [ 95.319932][ T5326] [ 95.324308][ T5326] [ 95.324308][ T5326] the existing dependency chain (in reverse order) is: [ 95.328207][ T5326] [ 95.328207][ T5326] -> #3 (&mddev->reconfig_mutex){+.+.}-{4:4}: [ 95.331672][ T5326] __mutex_lock+0x19d/0x1550 [ 95.333854][ T5326] md_start_sync+0x179/0x1010 [ 95.336048][ T5326] process_scheduled_works+0xc3d/0x1630 [ 95.338781][ T5326] worker_thread+0xa47/0xfb0 [ 95.340950][ T5326] kthread+0x38b/0x480 [ 95.342996][ T5326] ret_from_fork+0x514/0xb70 [ 95.345006][ T5326] ret_from_fork_asm+0x1a/0x30 [ 95.347311][ T5326] [ 95.347311][ T5326] -> #2 ((work_completion)(&mddev->sync_work)){+.+.}-{0:0}: [ 95.351243][ T5326] process_scheduled_works+0xc03/0x1630 [ 95.353832][ T5326] worker_thread+0xa47/0xfb0 [ 95.355949][ T5326] kthread+0x38b/0x480 [ 95.357867][ T5326] ret_from_fork+0x514/0xb70 [ 95.360152][ T5326] ret_from_fork_asm+0x1a/0x30 [ 95.362530][ T5326] [ 95.362530][ T5326] -> #1 ((wq_completion)md_misc){+.+.}-{0:0}: [ 95.366536][ T5326] touch_wq_lockdep_map+0xcb/0x180 [ 95.369047][ T5326] __flush_workqueue+0x148/0x1470 [ 95.371271][ T5326] md_alloc+0x32/0xf20 [ 95.373236][ T5326] md_alloc_and_put+0x1a/0x1f0 [ 95.375535][ T5326] blk_request_module+0x27d/0x2a0 [ 95.378028][ T5326] blkdev_get_no_open+0x3f/0xe0 [ 95.380214][ T5326] blkdev_open+0x1d7/0x600 [ 95.382407][ T5326] do_dentry_open+0x816/0x1380 [ 95.385012][ T5326] vfs_open+0x3b/0x340 [ 95.387076][ T5326] path_openat+0x1443/0x1d60 [ 95.389322][ T5326] do_file_open+0x23e/0x4a0 [ 95.391503][ T5326] do_sys_openat2+0x115/0x200 [ 95.393784][ T5326] __x64_sys_openat+0x138/0x170 [ 95.396144][ T5326] do_syscall_64+0x166/0x520 [ 95.398430][ T5326] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.401090][ T5326] [ 95.401090][ T5326] -> #0 (major_names_lock){+.+.}-{4:4}: [ 95.404298][ T5326] __lock_acquire+0x164c/0x2de0 [ 95.406496][ T5326] lock_acquire+0x115/0x350 [ 95.408596][ T5326] __mutex_lock+0x19d/0x1550 [ 95.410656][ T5326] blk_request_module+0x35/0x2a0 [ 95.413036][ T5326] blkdev_get_no_open+0x3f/0xe0 [ 95.415295][ T5326] bdev_file_open_by_dev+0xa0/0x240 [ 95.417798][ T5326] md_import_device+0x2e9/0x650 [ 95.420040][ T5326] hot_add_disk+0xa7/0x4b0 [ 95.422124][ T5326] md_ioctl+0x1e5e/0x2610 [ 95.424258][ T5326] blkdev_ioctl+0x5e3/0x740 [ 95.426488][ T5326] __se_sys_ioctl+0xfc/0x170 [ 95.428835][ T5326] do_syscall_64+0x166/0x520 [ 95.431146][ T5326] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.434037][ T5326] [ 95.434037][ T5326] other info that might help us debug this: [ 95.434037][ T5326] [ 95.438606][ T5326] Chain exists of: [ 95.438606][ T5326] major_names_lock --> (work_completion)(&mddev->sync_work) --> &mddev->reconfig_mutex [ 95.438606][ T5326] [ 95.445211][ T5326] Possible unsafe locking scenario: [ 95.445211][ T5326] [ 95.448201][ T5326] CPU0 CPU1 [ 95.450401][ T5326] ---- ---- [ 95.452755][ T5326] lock(&mddev->reconfig_mutex); [ 95.455329][ T5326] lock((work_completion)(&mddev->sync_work)); [ 95.459157][ T5326] lock(&mddev->reconfig_mutex); [ 95.462292][ T5326] lock(major_names_lock); [ 95.464190][ T5326] [ 95.464190][ T5326] *** DEADLOCK *** [ 95.464190][ T5326] [ 95.467872][ T5326] locks held by syz.0.0/5326: 1, last CPU#0: [ 95.470617][ T5326] #0: ffff88801f5c6358 (&mddev->reconfig_mutex){+.+.}-{4:4}, at: mddev_suspend_and_lock+0x48/0xf0 [ 95.475818][ T5326] [ 95.475818][ T5326] stack backtrace: [ 95.478404][ T5326] CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 95.482293][ T5326] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 95.486644][ T5326] Call Trace: [ 95.488165][ T5326] [ 95.489469][ T5326] dump_stack_lvl+0xe8/0x150 [ 95.491492][ T5326] print_circular_bug+0x2e2/0x300 [ 95.493690][ T5326] check_noncircular+0x12f/0x150 [ 95.495897][ T5326] __lock_acquire+0x164c/0x2de0 [ 95.498007][ T5326] ? __page_table_check_zero+0x6c/0x430 [ 95.500299][ T5326] ? post_alloc_hook+0x208/0x250 [ 95.502401][ T5326] ? get_page_from_freelist+0x2209/0x2280 [ 95.504881][ T5326] lock_acquire+0x115/0x350 [ 95.506792][ T5326] ? blk_request_module+0x35/0x2a0 [ 95.508926][ T5326] __mutex_lock+0x19d/0x1550 [ 95.510822][ T5326] ? blk_request_module+0x35/0x2a0 [ 95.512855][ T5326] ? lock_acquire+0x115/0x350 [ 95.514547][ T5326] ? blk_request_module+0x35/0x2a0 [ 95.516391][ T5326] ? __pfx___mutex_lock+0x10/0x10 [ 95.518585][ T5326] ? find_inode_fast+0xd2/0x740 [ 95.520778][ T5326] ? find_inode_fast+0x5dc/0x740 [ 95.522947][ T5326] ? find_inode_fast+0xd2/0x740 [ 95.524923][ T5326] blk_request_module+0x35/0x2a0 [ 95.526882][ T5326] blkdev_get_no_open+0x3f/0xe0 [ 95.528748][ T5326] bdev_file_open_by_dev+0xa0/0x240 [ 95.530837][ T5326] md_import_device+0x2e9/0x650 [ 95.532849][ T5326] hot_add_disk+0xa7/0x4b0 [ 95.534664][ T5326] md_ioctl+0x1e5e/0x2610 [ 95.536498][ T5326] ? tomoyo_path_number_perm+0x219/0x5f0 [ 95.539051][ T5326] ? __pfx_md_ioctl+0x10/0x10 [ 95.541194][ T5326] ? do_vfs_ioctl+0x116f/0x1530 [ 95.543341][ T5326] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 95.545496][ T5326] ? hook_file_ioctl+0x1f2/0x600 [ 95.547571][ T5326] ? __pfx_md_ioctl+0x10/0x10 [ 95.549462][ T5326] blkdev_ioctl+0x5e3/0x740 [ 95.551399][ T5326] ? __pfx_blkdev_ioctl+0x10/0x10 [ 95.553616][ T5326] ? __fget_files+0x2a/0x420 [ 95.555640][ T5326] ? bpf_lsm_file_ioctl+0x9/0x20 [ 95.557722][ T5326] ? __pfx_blkdev_ioctl+0x10/0x10 [ 95.559869][ T5326] __se_sys_ioctl+0xfc/0x170 [ 95.561876][ T5326] do_syscall_64+0x166/0x520 [ 95.563842][ T5326] ? trace_irq_disable+0x3b/0x140 [ 95.566019][ T5326] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.568636][ T5326] ? clear_bhb_loop+0x70/0xc0 [ 95.570617][ T5326] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.573049][ T5326] RIP: 0033:0x7fb05eb9e159 [ 95.574843][ T5326] 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 [ 95.582844][ T5326] RSP: 002b:00007fb05fa06fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 95.586064][ T5326] RAX: ffffffffffffffda RBX: 00007fb05ee25fa0 RCX: 00007fb05eb9e159 [ 95.589231][ T5326] RDX: 0000000000000000 RSI: 0000000000000928 RDI: 0000000000000004 [ 95.592468][ T5326] RBP: 00007fb05ec3503b R08: 0000000000000000 R09: 0000000000000000 [ 95.595650][ T5326] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 95.599090][ T5326] R13: 00007fb05ee26038 R14: 00007fb05ee25fa0 R15: 00007ffc20711fb8 [ 95.602555][ T5326] [ 95.606055][ T5327] netlink: 16 bytes leftover after parsing attributes in process `syz.0.0'. [ 95.616337][ T5327] loop0: detected capacity change from 0 to 2048 [ 95.652175][ T5333] md: md0: resync done. [ 95.666016][ T5327] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 95.666041][ T5327] NILFS (loop0): mounting unchecked fs [ 95.717196][ T5327] NILFS (loop0): recovery complete [ 95.724817][ T5337] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 95.770402][ T5326] md: could not open device unknown-block(0,0). [ 95.770442][ T5326] md: error, md_import_device() returned -6