program: r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x2c040, 0x0) sendmsg$unix(0xffffffffffffffff, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000002480)=[{0x0}], 0x1, &(0x7f0000000040)}, 0x0) mount(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f0000000000)='nfs4\x00', 0x0, &(0x7f00000001c0)='\x01') ioctl$FIBMAP(r0, 0x1, &(0x7f00000000c0)=0x100) r1 = socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000180), r1) ioctl$sock_SIOCGIFINDEX_80211(r1, 0x8933, &(0x7f00000001c0)={'wlan0\x00', 0x0}) sendmsg$NL80211_CMD_TRIGGER_SCAN(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000440)={0x24, r2, 0x1, 0x70bd2b, 0x25dfdbff, {{}, {@val={0x8, 0x3, r3}, @void}}, [@NL80211_ATTR_SCAN_SUPP_RATES={0x8, 0x7d, 0x0, 0x1, [@NL80211_BAND_60GHZ={0x4}]}]}, 0x24}, 0x1, 0x0, 0x0, 0x24000011}, 0x4004800) r4 = syz_open_dev$video4linux(&(0x7f0000000080), 0x0, 0x0) ioctl$VIDIOC_QUERYMENU(r4, 0xc008561c, &(0x7f0000000040)={0xf0f000, 0x8, @name="a13c67a9121f85cc1d3e142fe2fb8f9ba5ee159b867aa7d60668087c38d76487"}) syz_mount_image$ocfs2(&(0x7f00000026c0), &(0x7f0000004780)='./file0\x00', 0x200000, &(0x7f0000002640)={[{@usrquota}, {@coherency_full}, {@err_cont}, {@heartbeat_none}, {@err_cont}, {@nointr}, {@grpquota}]}, 0x1, 0x4703, 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[ 81.831233][ T4663] Bluetooth: hci0: command tx timeout [ 81.835437][ T1312] ieee802154 phy0 wpan0: encryption failed: -22 [ 81.844396][ T1312] ieee802154 phy1 wpan1: encryption failed: -22 [ 82.221363][ T5316] loop0: detected capacity change from 0 to 32768 [ 82.248397][ T5316] (syz.0.0,5316,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 82.268098][ T5316] (syz.0.0,5316,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 82.301890][ T5316] JBD2: Ignoring recovery information on journal [ 82.344128][ T5316] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 82.355035][ T1126] ocfs2: Finishing quota recovery on device (7,0) for slot 0 [ 82.372776][ T5316] [ 82.373852][ T5316] ====================================================== [ 82.376813][ T5316] WARNING: possible circular locking dependency detected [ 82.379692][ T5316] 6.15.0-rc5-syzkaller #0 Not tainted [ 82.381930][ T5316] ------------------------------------------------------ [ 82.384686][ T5316] syz.0.0/5316 is trying to acquire lock: [ 82.387175][ T5316] ffff888041316148 ((wq_completion)ocfs2_wq){+.+.}-{0:0}, at: touch_wq_lockdep_map+0xb5/0x180 [ 82.391710][ T5316] [ 82.391710][ T5316] but task is already holding lock: [ 82.394869][ T5316] ffff88801f5040e0 (&type->s_umount_key#49){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 [ 82.398663][ T5316] [ 82.398663][ T5316] which lock already depends on the new lock. [ 82.398663][ T5316] [ 82.404581][ T5316] [ 82.404581][ T5316] the existing dependency chain (in reverse order) is: [ 82.408209][ T5316] [ 82.408209][ T5316] -> #2 (&type->s_umount_key#49){++++}-{4:4}: [ 82.411918][ T5316] lock_acquire+0x120/0x360 [ 82.413926][ T5316] down_read+0x46/0x2e0 [ 82.415951][ T5316] ocfs2_finish_quota_recovery+0x12c/0x1e60 [ 82.418649][ T5316] ocfs2_complete_recovery+0x15b6/0x2160 [ 82.421157][ T5316] process_scheduled_works+0xadb/0x17a0 [ 82.423693][ T5316] worker_thread+0x8a0/0xda0 [ 82.425880][ T5316] kthread+0x70e/0x8a0 [ 82.427781][ T5316] ret_from_fork+0x4b/0x80 [ 82.429732][ T5316] ret_from_fork_asm+0x1a/0x30 [ 82.432019][ T5316] [ 82.432019][ T5316] -> #1 ((work_completion)(&journal->j_recovery_work)){+.+.}-{0:0}: [ 82.436286][ T5316] lock_acquire+0x120/0x360 [ 82.438722][ T5316] process_scheduled_works+0xa09/0x17a0 [ 82.441445][ T5316] worker_thread+0x8a0/0xda0 [ 82.443727][ T5316] kthread+0x70e/0x8a0 [ 82.445749][ T5316] ret_from_fork+0x4b/0x80 [ 82.447803][ T5316] ret_from_fork_asm+0x1a/0x30 [ 82.450040][ T5316] [ 82.450040][ T5316] -> #0 ((wq_completion)ocfs2_wq){+.+.}-{0:0}: [ 82.453653][ T5316] validate_chain+0xb9b/0x2140 [ 82.455942][ T5316] __lock_acquire+0xaac/0xd20 [ 82.458250][ T5316] lock_acquire+0x120/0x360 [ 82.460381][ T5316] touch_wq_lockdep_map+0xcb/0x180 [ 82.462751][ T5316] __flush_workqueue+0x121/0x14b0 [ 82.465086][ T5316] ocfs2_shutdown_local_alloc+0xe7/0xa10 [ 82.467629][ T5316] ocfs2_dismount_volume+0x1f9/0x8d0 [ 82.470005][ T5316] generic_shutdown_super+0x132/0x2c0 [ 82.472521][ T5316] kill_block_super+0x44/0x90 [ 82.474744][ T5316] deactivate_locked_super+0xb9/0x130 [ 82.477325][ T5316] cleanup_mnt+0x425/0x4c0 [ 82.479325][ T5316] task_work_run+0x1d1/0x260 [ 82.481421][ T5316] resume_user_mode_work+0x5e/0x80 [ 82.483619][ T5316] syscall_exit_to_user_mode+0x9a/0x120 [ 82.486051][ T5316] do_syscall_64+0x103/0x210 [ 82.488231][ T5316] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 82.491119][ T5316] [ 82.491119][ T5316] other info that might help us debug this: [ 82.491119][ T5316] [ 82.495346][ T5316] Chain exists of: [ 82.495346][ T5316] (wq_completion)ocfs2_wq --> (work_completion)(&journal->j_recovery_work) --> &type->s_umount_key#49 [ 82.495346][ T5316] [ 82.502215][ T5316] Possible unsafe locking scenario: [ 82.502215][ T5316] [ 82.505348][ T5316] CPU0 CPU1 [ 82.507570][ T5316] ---- ---- [ 82.509723][ T5316] lock(&type->s_umount_key#49); [ 82.511874][ T5316] lock((work_completion)(&journal->j_recovery_work)); [ 82.515627][ T5316] lock(&type->s_umount_key#49); [ 82.518729][ T5316] lock((wq_completion)ocfs2_wq); [ 82.520884][ T5316] [ 82.520884][ T5316] *** DEADLOCK *** [ 82.520884][ T5316] [ 82.523990][ T5316] 1 lock held by syz.0.0/5316: [ 82.526036][ T5316] #0: ffff88801f5040e0 (&type->s_umount_key#49){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 [ 82.530183][ T5316] [ 82.530183][ T5316] stack backtrace: [ 82.532479][ T5316] CPU: 0 UID: 0 PID: 5316 Comm: syz.0.0 Not tainted 6.15.0-rc5-syzkaller #0 PREEMPT(full) [ 82.532493][ T5316] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 82.532500][ T5316] Call Trace: [ 82.532508][ T5316] [ 82.532513][ T5316] dump_stack_lvl+0x189/0x250 [ 82.532535][ T5316] ? __pfx_dump_stack_lvl+0x10/0x10 [ 82.532550][ T5316] ? __pfx__printk+0x10/0x10 [ 82.532561][ T5316] ? print_lock_name+0xde/0x100 [ 82.532579][ T5316] print_circular_bug+0x2ee/0x310 [ 82.532587][ T5316] check_noncircular+0x134/0x160 [ 82.532595][ T5316] validate_chain+0xb9b/0x2140 [ 82.532603][ T5316] ? do_raw_spin_unlock+0x4d/0x240 [ 82.532610][ T5316] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 82.532618][ T5316] __lock_acquire+0xaac/0xd20 [ 82.532627][ T5316] ? touch_wq_lockdep_map+0xb5/0x180 [ 82.532633][ T5316] lock_acquire+0x120/0x360 [ 82.532641][ T5316] ? touch_wq_lockdep_map+0xb5/0x180 [ 82.532648][ T5316] ? touch_wq_lockdep_map+0xb5/0x180 [ 82.532654][ T5316] touch_wq_lockdep_map+0xcb/0x180 [ 82.532660][ T5316] ? touch_wq_lockdep_map+0xb5/0x180 [ 82.532666][ T5316] __flush_workqueue+0x121/0x14b0 [ 82.532673][ T5316] ? __pfx_work_grab_pending+0x10/0x10 [ 82.532680][ T5316] ? __pfx___flush_workqueue+0x10/0x10 [ 82.532686][ T5316] ? __cancel_work+0x1e6/0x2e0 [ 82.532693][ T5316] ? __pfx___cancel_work+0x10/0x10 [ 82.532699][ T5316] ? work_grab_pending+0x44f/0x990 [ 82.532705][ T5316] ocfs2_shutdown_local_alloc+0xe7/0xa10 [ 82.532715][ T5316] ? __pfx_work_grab_pending+0x10/0x10 [ 82.532722][ T5316] ? __pfx_ocfs2_shutdown_local_alloc+0x10/0x10 [ 82.532728][ T5316] ? enable_work+0x1c4/0x2c0 [ 82.532734][ T5316] ? lockdep_hardirqs_on+0x9c/0x150 [ 82.532741][ T5316] ? enable_work+0x258/0x2c0 [ 82.532747][ T5316] ? __pfx_enable_work+0x10/0x10 [ 82.532754][ T5316] ? iput+0x398/0x9d0 [ 82.532764][ T5316] ocfs2_dismount_volume+0x1f9/0x8d0 [ 82.532772][ T5316] ? __pfx_ocfs2_dismount_volume+0x10/0x10 [ 82.532779][ T5316] ? __pfx_evict_inodes+0x10/0x10 [ 82.532788][ T5316] ? __pfx_ocfs2_put_super+0x10/0x10 [ 82.532795][ T5316] generic_shutdown_super+0x132/0x2c0 [ 82.532802][ T5316] kill_block_super+0x44/0x90 [ 82.532808][ T5316] deactivate_locked_super+0xb9/0x130 [ 82.532814][ T5316] cleanup_mnt+0x425/0x4c0 [ 82.532823][ T5316] ? lockdep_hardirqs_on+0x9c/0x150 [ 82.532830][ T5316] task_work_run+0x1d1/0x260 [ 82.532838][ T5316] ? __pfx_task_work_run+0x10/0x10 [ 82.532847][ T5316] resume_user_mode_work+0x5e/0x80 [ 82.532855][ T5316] syscall_exit_to_user_mode+0x9a/0x120 [ 82.532863][ T5316] do_syscall_64+0x103/0x210 [ 82.532874][ T5316] ? clear_bhb_loop+0x45/0xa0 [ 82.532885][ T5316] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 82.532894][ T5316] RIP: 0033:0x7f75fb99010a [ 82.532905][ T5316] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 [ 82.532917][ T5316] RSP: 002b:00007f75fc8b6e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 82.532925][ T5316] RAX: ffffffffffffffec RBX: 00007f75fc8b6ef0 RCX: 00007f75fb99010a [ 82.532930][ T5316] RDX: 00002000000026c0 RSI: 0000200000004780 RDI: 00007f75fc8b6eb0 [ 82.532939][ T5316] RBP: 00002000000026c0 R08: 00007f75fc8b6ef0 R09: 0000000000200000 [ 82.532943][ T5316] R10: 0000000000200000 R11: 0000000000000246 R12: 0000200000004780 [ 82.532948][ T5316] R13: 00007f75fc8b6eb0 R14: 0000000000004703 R15: 0000200000002640 [ 82.532955][ T5316] [ 83.877155][ T49] Bluetooth: hci0: command tx timeout [ 85.957521][ T49] Bluetooth: hci0: command tx timeout [ 86.600942][ T57] cfg80211: failed to load regulatory.db [ 88.037204][ T49] Bluetooth: hci0: command tx timeout