audit: type=1400 audit(1664335310.694:8): avc:  denied  { kernel } for  pid=3963 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.0.0-rc7-next-20220927 #1 Not tainted
------------------------------------------------------
syz-executor.2/3964 is trying to acquire lock:
ffffffff853faab8 ((console_sem).lock){....}-{2:2}, at: down_trylock+0xe/0x70

but task is already holding lock:
ffff88800d12c420 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_out+0x53b/0x18d0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&ctx->lock){....}-{2:2}:
       _raw_spin_lock+0x2a/0x40
       __perf_event_task_sched_out+0x53b/0x18d0
       __schedule+0xedd/0x2470
       schedule+0xda/0x1b0
       exit_to_user_mode_prepare+0x114/0x1a0
       syscall_exit_to_user_mode+0x19/0x40
       do_syscall_64+0x48/0x90
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

-> #2 (&rq->__lock){-.-.}-{2:2}:
       _raw_spin_lock_nested+0x30/0x40
       raw_spin_rq_lock_nested+0x1e/0x30
       task_fork_fair+0x63/0x4d0
       sched_cgroup_fork+0x3d0/0x540
       copy_process+0x4183/0x6e20
       kernel_clone+0xe7/0x890
       user_mode_thread+0xad/0xf0
       rest_init+0x24/0x250
       arch_call_rest_init+0xf/0x14
       start_kernel+0x4c6/0x4eb
       secondary_startup_64_no_verify+0xe0/0xeb

-> #1 (&p->pi_lock){-.-.}-{2:2}:
       _raw_spin_lock_irqsave+0x39/0x60
       try_to_wake_up+0xab/0x1930
       up+0x75/0xb0
       __up_console_sem+0x6e/0x80
       console_unlock+0x46a/0x590
       vt_ioctl+0x2822/0x2ca0
       tty_ioctl+0x785/0x16b0
       __x64_sys_ioctl+0x19a/0x210
       do_syscall_64+0x3b/0x90
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

-> #0 ((console_sem).lock){....}-{2:2}:
       __lock_acquire+0x2a02/0x5e70
       lock_acquire+0x1a2/0x530
       _raw_spin_lock_irqsave+0x39/0x60
       down_trylock+0xe/0x70
       __down_trylock_console_sem+0x3b/0xd0
       vprintk_emit+0x16b/0x560
       vprintk+0x84/0xa0
       _printk+0xba/0xf1
       report_bug.cold+0x72/0xab
       handle_bug+0x3c/0x70
       exc_invalid_op+0x14/0x50
       asm_exc_invalid_op+0x16/0x20
       group_sched_out.part.0+0x2c7/0x460
       ctx_sched_out+0x8f1/0xc10
       __perf_event_task_sched_out+0x6d0/0x18d0
       __schedule+0xedd/0x2470
       schedule+0xda/0x1b0
       exit_to_user_mode_prepare+0x114/0x1a0
       syscall_exit_to_user_mode+0x19/0x40
       do_syscall_64+0x48/0x90
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

other info that might help us debug this:

Chain exists of:
  (console_sem).lock --> &rq->__lock --> &ctx->lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ctx->lock);
                               lock(&rq->__lock);
                               lock(&ctx->lock);
  lock((console_sem).lock);

 *** DEADLOCK ***

2 locks held by syz-executor.2/3964:
 #0: ffff88806ce37d18 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x1cf/0x2470
 #1: ffff88800d12c420 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_out+0x53b/0x18d0

stack backtrace:
CPU: 0 PID: 3964 Comm: syz-executor.2 Not tainted 6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 check_noncircular+0x263/0x2e0
 __lock_acquire+0x2a02/0x5e70
 lock_acquire+0x1a2/0x530
 _raw_spin_lock_irqsave+0x39/0x60
 down_trylock+0xe/0x70
 __down_trylock_console_sem+0x3b/0xd0
 vprintk_emit+0x16b/0x560
 vprintk+0x84/0xa0
 _printk+0xba/0xf1
 report_bug.cold+0x72/0xab
 handle_bug+0x3c/0x70
 exc_invalid_op+0x14/0x50
 asm_exc_invalid_op+0x16/0x20
RIP: 0010:group_sched_out.part.0+0x2c7/0x460
Code: 5e 41 5f e9 ab a9 ef ff e8 a6 a9 ef ff 65 8b 1d 1b 0f ac 7e 31 ff 89 de e8 46 a6 ef ff 85 db 0f 84 8a 00 00 00 e8 89 a9 ef ff <0f> 0b e9 a5 fe ff ff e8 7d a9 ef ff 48 8d 7d 10 48 b8 00 00 00 00
RSP: 0018:ffff88804029fc48 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888017f18000 RSI: ffffffff815666b7 RDI: 0000000000000005
RBP: ffff888008660000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865b401b R12: ffff88800d12c400
R13: ffff88806ce3d140 R14: ffffffff8547cf80 R15: 0000000000000002
 ctx_sched_out+0x8f1/0xc10
 __perf_event_task_sched_out+0x6d0/0x18d0
 __schedule+0xedd/0x2470
 schedule+0xda/0x1b0
 exit_to_user_mode_prepare+0x114/0x1a0
 syscall_exit_to_user_mode+0x19/0x40
 do_syscall_64+0x48/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa5caa41b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa5c7fb7218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fa5cab54f68 RCX: 00007fa5caa41b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fa5cab54f6c
RBP: 00007fa5cab54f60 R08: 000000000000000e R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 00007fa5cab54f6c
R13: 00007ffd9f67e7ff R14: 00007fa5c7fb7300 R15: 0000000000022000
 </TASK>
WARNING: CPU: 0 PID: 3964 at kernel/events/core.c:2309 group_sched_out.part.0+0x2c7/0x460
Modules linked in:
CPU: 0 PID: 3964 Comm: syz-executor.2 Not tainted 6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:group_sched_out.part.0+0x2c7/0x460
Code: 5e 41 5f e9 ab a9 ef ff e8 a6 a9 ef ff 65 8b 1d 1b 0f ac 7e 31 ff 89 de e8 46 a6 ef ff 85 db 0f 84 8a 00 00 00 e8 89 a9 ef ff <0f> 0b e9 a5 fe ff ff e8 7d a9 ef ff 48 8d 7d 10 48 b8 00 00 00 00
RSP: 0018:ffff88804029fc48 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888017f18000 RSI: ffffffff815666b7 RDI: 0000000000000005
RBP: ffff888008660000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865b401b R12: ffff88800d12c400
R13: ffff88806ce3d140 R14: ffffffff8547cf80 R15: 0000000000000002
FS:  00007fa5c7fb7700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faff9903088 CR3: 000000000db8e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ctx_sched_out+0x8f1/0xc10
 __perf_event_task_sched_out+0x6d0/0x18d0
 __schedule+0xedd/0x2470
 schedule+0xda/0x1b0
 exit_to_user_mode_prepare+0x114/0x1a0
 syscall_exit_to_user_mode+0x19/0x40
 do_syscall_64+0x48/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa5caa41b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa5c7fb7218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fa5cab54f68 RCX: 00007fa5caa41b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fa5cab54f6c
RBP: 00007fa5cab54f60 R08: 000000000000000e R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 00007fa5cab54f6c
R13: 00007ffd9f67e7ff R14: 00007fa5c7fb7300 R15: 0000000000022000
 </TASK>
irq event stamp: 692
hardirqs last  enabled at (691): [<ffffffff8133ec59>] exit_to_user_mode_prepare+0x109/0x1a0
hardirqs last disabled at (692): [<ffffffff842598f5>] __schedule+0x1225/0x2470
softirqs last  enabled at (576): [<ffffffff8116fa0b>] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (567): [<ffffffff8116fa0b>] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
hrtimer: interrupt took 21210 ns
audit: type=1400 audit(1664335310.924:9): avc:  denied  { write } for  pid=3963 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
loop5: detected capacity change from 0 to 592
loop7: detected capacity change from 0 to 180
loop6: detected capacity change from 0 to 132
loop3: detected capacity change from 0 to 608
loop5: detected capacity change from 0 to 184
loop2: detected capacity change from 0 to 1298
loop1: detected capacity change from 0 to 1352
loop7: detected capacity change from 0 to 5168
loop6: detected capacity change from 0 to 1304
loop5: detected capacity change from 0 to 5408
loop3: detected capacity change from 0 to 352
loop2: detected capacity change from 0 to 1298
loop3: detected capacity change from 0 to 128
loop1: detected capacity change from 0 to 128
loop7: detected capacity change from 0 to 128
loop5: detected capacity change from 0 to 5408
loop6: detected capacity change from 0 to 360
loop3: detected capacity change from 0 to 130
loop2: detected capacity change from 0 to 1298
loop1: detected capacity change from 0 to 368
loop6: detected capacity change from 0 to 136
loop1: detected capacity change from 0 to 592
loop5: detected capacity change from 0 to 5408
loop1: detected capacity change from 0 to 5152
loop0: detected capacity change from 0 to 344
loop4: detected capacity change from 0 to 1300
loop2: detected capacity change from 0 to 1298
loop6: detected capacity change from 0 to 1294
loop5: detected capacity change from 0 to 5408
loop0: detected capacity change from 0 to 1348
loop3: detected capacity change from 0 to 128
loop1: detected capacity change from 0 to 128
loop4: detected capacity change from 0 to 128
loop0: detected capacity change from 0 to 128
loop1: detected capacity change from 0 to 132
loop3: detected capacity change from 0 to 352
loop6: detected capacity change from 0 to 344
loop0: detected capacity change from 0 to 608
loop4: detected capacity change from 0 to 180
loop0: detected capacity change from 0 to 5168
loop6: detected capacity change from 0 to 1298
loop3: detected capacity change from 0 to 352
loop4: detected capacity change from 0 to 5408
loop5: detected capacity change from 0 to 1352
loop1: detected capacity change from 0 to 1304
loop0: detected capacity change from 0 to 128
loop7: detected capacity change from 0 to 128
loop0: detected capacity change from 0 to 5392
loop4: detected capacity change from 0 to 128
EXT4-fs: Invalid commit interval -2147483648, must be smaller than 2147483
loop6: detected capacity change from 0 to 128
EXT4-fs: Invalid commit interval -2147483648, must be smaller than 2147483
loop3: detected capacity change from 0 to 352
loop1: detected capacity change from 0 to 128
loop5: detected capacity change from 0 to 360
loop7: detected capacity change from 0 to 1300
loop4: detected capacity change from 0 to 128
loop0: detected capacity change from 0 to 130
loop1: detected capacity change from 0 to 1294
loop6: detected capacity change from 0 to 128
loop3: detected capacity change from 0 to 352
EXT4-fs: Invalid commit interval -2147483648, must be smaller than 2147483
loop5: detected capacity change from 0 to 5152
loop0: detected capacity change from 0 to 5392
loop4: detected capacity change from 0 to 1348
loop1: detected capacity change from 0 to 128
loop5: detected capacity change from 0 to 128
loop7: detected capacity change from 0 to 368
loop6: detected capacity change from 0 to 136
EXT4-fs: Invalid commit interval -2147483648, must be smaller than 2147483
loop4: detected capacity change from 0 to 184
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 1
CPU: 0 PID: 4225 Comm: syz-executor.7 Tainted: G        W          6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 should_fail.cold+0x5/0xa
EXT4-fs: Invalid commit interval -2147483648, must be smaller than 2147483
 _copy_from_user+0x2a/0x170
 move_addr_to_kernel.part.0+0x31/0x110
 __sys_bind+0xda/0x260
 __x64_sys_bind+0x6f/0xb0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f77fc2ffb19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f77f9875188 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 00007f77fc412f60 RCX: 00007f77fc2ffb19
RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 00007f77f98751d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdbe33ff7f R14: 00007f77f9875300 R15: 0000000000022000
 </TASK>
loop4: detected capacity change from 0 to 1298
loop0: detected capacity change from 0 to 5408
loop3: detected capacity change from 0 to 3520
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
loop2: detected capacity change from 0 to 4728
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 4258 Comm: syz-executor.0 Tainted: G        W          6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
loop5: detected capacity change from 0 to 512
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 should_fail.cold+0x5/0xa
 _copy_from_user+0x2a/0x170
 __do_sys_memfd_create+0x103/0x4e0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdc5a492b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdc57a07f48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fdc5a492b19
RDX: 00000000002a4000 RSI: 0000000000000000 RDI: 00007fdc5a4ec0fb
RBP: 000000000000000d R08: 0000000000152000 R09: ffffffffffffffff
R10: 000000000000000d R11: 0000000000000246 R12: 0000000008100000
R13: 0000000020000100 R14: 00000000002a4000 R15: 0000000020011200
 </TASK>
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 4261 Comm: syz-executor.4 Tainted: G        W          6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 should_fail.cold+0x5/0xa
 _copy_from_user+0x2a/0x170
 __do_sys_memfd_create+0x103/0x4e0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe48dae2b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe48b057f48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fe48dae2b19
RDX: 00000000000a2400 RSI: 0000000000000000 RDI: 00007fe48db3c0fb
RBP: 000000000000000a R08: 0000000000051200 R09: ffffffffffffffff
R10: 000000000000000a R11: 0000000000000246 R12: 0000000008100000
R13: 0000000020000100 R14: 00000000000a2400 R15: 0000000020010f00
 </TASK>
loop3: detected capacity change from 0 to 512
loop1: detected capacity change from 0 to 2048
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 4271 Comm: syz-executor.7 Tainted: G        W          6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 should_fail.cold+0x5/0xa
 _copy_to_user+0x2a/0x140
 simple_read_from_buffer+0xcc/0x160
 proc_fail_nth_read+0x198/0x230
 vfs_read+0x253/0x930
 ksys_read+0x127/0x250
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f77fc2b269c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 2f fd ff ff 48
RSP: 002b:00007f77f9875170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f77fc2b269c
RDX: 000000000000000f RSI: 00007f77f98751e0 RDI: 0000000000000004
RBP: 00007f77f98751d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdbe33ff7f R14: 00007f77f9875300 R15: 0000000000022000
 </TASK>
EXT4-fs (loop5): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: none.
loop2: detected capacity change from 0 to 512
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop2): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir593346990/syzkaller.vi94U9/14/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop1): mounted filesystem without journal. Quota mode: writeback.
EXT4-fs (loop2): unmounting filesystem.
EXT4-fs (loop3): unmounting filesystem.
EXT4-fs (loop1): unmounting filesystem.
loop5: detected capacity change from 0 to 2048
loop2: detected capacity change from 0 to 512
loop4: detected capacity change from 0 to 1298
loop3: detected capacity change from 0 to 512
loop6: detected capacity change from 0 to 3520
loop1: detected capacity change from 0 to 732
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop5): mounted filesystem without journal. Quota mode: writeback.
EXT4-fs (loop2): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir593346990/syzkaller.vi94U9/15/file0 supports timestamps until 2038 (0x7fffffff)
loop0: detected capacity change from 0 to 5408
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop3): unmounting filesystem.
loop6: detected capacity change from 0 to 512
loop1: detected capacity change from 0 to 512
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop2): unmounting filesystem.
loop3: detected capacity change from 0 to 512
loop5: detected capacity change from 0 to 640
EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop6): unmounting filesystem.
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop1): unmounting filesystem.
loop4: detected capacity change from 0 to 1298
EXT4-fs (loop5): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir226530173/syzkaller.kEujDo/21/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop5): unmounting filesystem.
loop2: detected capacity change from 0 to 512
EXT4-fs (loop2): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir593346990/syzkaller.vi94U9/16/file0 supports timestamps until 2038 (0x7fffffff)
loop6: detected capacity change from 0 to 512
loop5: detected capacity change from 0 to 640
loop1: detected capacity change from 0 to 512
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop2): unmounting filesystem.
EXT4-fs (loop3): unmounting filesystem.
EXT4-fs (loop5): mounted filesystem without journal. Quota mode: writeback.
EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir226530173/syzkaller.kEujDo/22/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop1): unmounting filesystem.
EXT4-fs (loop6): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
loop1: detected capacity change from 0 to 512
loop0: detected capacity change from 0 to 5408
loop3: detected capacity change from 0 to 512
loop5: detected capacity change from 0 to 640
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: none.
loop6: detected capacity change from 0 to 512
EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none.
loop2: detected capacity change from 0 to 512
EXT4-fs (loop5): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir226530173/syzkaller.kEujDo/23/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop1): unmounting filesystem.
EXT4-fs (loop3): unmounting filesystem.
EXT4-fs (loop2): mounted filesystem without journal. Quota mode: writeback.
loop4: detected capacity change from 0 to 1298
EXT4-fs (loop6): unmounting filesystem.
ext4 filesystem being mounted at /syzkaller-testdir593346990/syzkaller.vi94U9/17/file0 supports timestamps until 2038 (0x7fffffff)
loop1: detected capacity change from 0 to 512
loop6: detected capacity change from 0 to 512
EXT4-fs (loop5): unmounting filesystem.
loop3: detected capacity change from 0 to 4096
EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none.
loop5: detected capacity change from 0 to 640
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop2): unmounting filesystem.
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback.
EXT4-fs (loop1): unmounting filesystem.
EXT4-fs (loop5): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir226530173/syzkaller.kEujDo/24/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop6): unmounting filesystem.
EXT4-fs (loop3): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
loop1: detected capacity change from 0 to 512
loop3: detected capacity change from 0 to 4096
loop5: detected capacity change from 0 to 3520
loop2: detected capacity change from 0 to 2560
loop4: detected capacity change from 0 to 1298
loop6: detected capacity change from 0 to 4096
loop0: detected capacity change from 0 to 5408
EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none.
ISO 9660 Extensions: Microsoft Joliet Level 3
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback.
ISOFS: changing to secondary root
EXT4-fs (loop2): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir593346990/syzkaller.vi94U9/18/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop1): unmounting filesystem.
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop3): unmounting filesystem.
loop5: detected capacity change from 0 to 3520
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
EXT4-fs (loop6): unmounting filesystem.
EXT4-fs (loop2): unmounting filesystem.
loop5: detected capacity change from 0 to 3520
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
loop6: detected capacity change from 0 to 4096
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop6): unmounting filesystem.
loop5: detected capacity change from 0 to 3520
ISO 9660 Extensions: Microsoft Joliet Level 3
loop0: detected capacity change from 0 to 5408
ISOFS: changing to secondary root
loop3: detected capacity change from 0 to 4096
loop6: detected capacity change from 0 to 4096
loop2: detected capacity change from 0 to 2560
loop1: detected capacity change from 0 to 512
loop4: detected capacity change from 0 to 1298
EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback.
EXT4-fs (loop2): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir593346990/syzkaller.vi94U9/20/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop2): unmounting filesystem.
EXT4-fs (loop6): unmounting filesystem.
loop6: detected capacity change from 0 to 4096
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 4473 Comm: syz-executor.4 Tainted: G        W          6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 should_fail.cold+0x5/0xa
 copyin+0x19/0x120
 copy_page_from_iter_atomic+0x249/0x1290
 generic_perform_write+0x2cb/0x580
 __generic_file_write_iter+0x2da/0x480
 generic_file_write_iter+0xe3/0x350
 vfs_write+0x9c3/0xd90
 __x64_sys_pwrite64+0x1fb/0x260
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe48da95ab7
Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b
RSP: 002b:00007fe48b057f20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fe48db2c970 RCX: 00007fe48da95ab7
RDX: 00000000000000c0 RSI: 0000000020010000 RDI: 0000000000000004
RBP: 000000000000000a R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000004
R13: 0000000000000004 R14: 0000000020000200 R15: 0000000000000000
 </TASK>
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 4477 Comm: syz-executor.4 Tainted: G        W          6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 should_fail.cold+0x5/0xa
 copyin+0x19/0x120
 copy_page_from_iter_atomic+0x249/0x1290
 generic_perform_write+0x2cb/0x580
 __generic_file_write_iter+0x2da/0x480
 generic_file_write_iter+0xe3/0x350
 vfs_write+0x9c3/0xd90
 __x64_sys_pwrite64+0x1fb/0x260
 do_syscall_64+0x3b/0x90
loop0: detected capacity change from 0 to 5408
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe48da95ab7
Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b
RSP: 002b:00007fe48b057f20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fe48db2c970 RCX: 00007fe48da95ab7
RDX: 0000000000000040 RSI: 0000000020010100 RDI: 0000000000000004
RBP: 000000000000000a R08: 0000000000000000 R09: ffffffffffffffff
R10: 00000000000001e0 R11: 0000000000000293 R12: 0000000000000004
R13: 0000000000000004 R14: 0000000020000218 R15: 0000000000000001
 </TASK>
loop5: detected capacity change from 0 to 512
loop1: detected capacity change from 0 to 512
loop3: detected capacity change from 0 to 2048
loop6: detected capacity change from 0 to 512
ext4 filesystem being mounted at /syzkaller-testdir121745921/syzkaller.3ZCpXv/30/file0 supports timestamps until 2038 (0x7fffffff)
loop0: detected capacity change from 0 to 5408
FAT-fs (loop0): bogus number of reserved sectors
FAT-fs (loop0): Can't find a valid FAT filesystem
loop4: detected capacity change from 0 to 1298
loop6: detected capacity change from 0 to 512
ext4 filesystem being mounted at /syzkaller-testdir121745921/syzkaller.3ZCpXv/31/file0 supports timestamps until 2038 (0x7fffffff)
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 4508 Comm: syz-executor.0 Tainted: G        W          6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 should_fail.cold+0x5/0xa
 copyin+0x19/0x120
 copy_page_from_iter_atomic+0x249/0x1290
 generic_perform_write+0x2cb/0x580
 __generic_file_write_iter+0x2da/0x480
 generic_file_write_iter+0xe3/0x350
 vfs_write+0x9c3/0xd90
 __x64_sys_pwrite64+0x1fb/0x260
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdc5a445ab7
Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b
RSP: 002b:00007fdc57a07f20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fdc5a4dc970 RCX: 00007fdc5a445ab7
RDX: 0000000000000060 RSI: 0000000020010000 RDI: 0000000000000004
RBP: 000000000000000d R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000004
R13: 0000000000000004 R14: 0000000020000200 R15: 0000000000000000
 </TASK>
loop0: detected capacity change from 0 to 5408
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 4510 Comm: syz-executor.4 Tainted: G        W          6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 should_fail.cold+0x5/0xa
 copyin+0x19/0x120
 copy_page_from_iter_atomic+0x249/0x1290
 generic_perform_write+0x2cb/0x580
 __generic_file_write_iter+0x2da/0x480
 generic_file_write_iter+0xe3/0x350
 vfs_write+0x9c3/0xd90
 __x64_sys_pwrite64+0x1fb/0x260
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe48da95ab7
Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b
RSP: 002b:00007fe48b057f20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fe48db2c970 RCX: 00007fe48da95ab7
RDX: 0000000000000020 RSI: 0000000020010200 RDI: 0000000000000004
RBP: 000000000000000a R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000400 R11: 0000000000000293 R12: 0000000000000004
R13: 0000000000000004 R14: 0000000020000230 R15: 0000000000000002
 </TASK>
loop4: detected capacity change from 0 to 1298
loop3: detected capacity change from 0 to 1024
loop5: detected capacity change from 0 to 2048
loop6: detected capacity change from 0 to 512
loop1: detected capacity change from 0 to 512
loop2: detected capacity change from 0 to 320
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 4535 Comm: syz-executor.4 Tainted: G        W          6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 should_fail.cold+0x5/0xa
 copyin+0x19/0x120
 copy_page_from_iter_atomic+0x249/0x1290
ISO 9660 Extensions: Microsoft Joliet Level 3
 generic_perform_write+0x2cb/0x580
 __generic_file_write_iter+0x2da/0x480
 generic_file_write_iter+0xe3/0x350
 vfs_write+0x9c3/0xd90
 __x64_sys_pwrite64+0x1fb/0x260
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe48da95ab7
Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b
RSP: 002b:00007fe48b057f20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fe48db2c970 RCX: 00007fe48da95ab7
RDX: 0000000000000020 RSI: 0000000020010300 RDI: 0000000000000004
RBP: 000000000000000a R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000600 R11: 0000000000000293 R12: 0000000000000004
R13: 0000000000000004 R14: 0000000020000248 R15: 0000000000000003
 </TASK>
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 4536 Comm: syz-executor.0 Tainted: G        W          6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 should_fail.cold+0x5/0xa
 copyin+0x19/0x120
 copy_page_from_iter_atomic+0x249/0x1290
 generic_perform_write+0x2cb/0x580
 __generic_file_write_iter+0x2da/0x480
 generic_file_write_iter+0xe3/0x350
 vfs_write+0x9c3/0xd90
 __x64_sys_pwrite64+0x1fb/0x260
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdc5a445ab7
Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b
RSP: 002b:00007fdc57a07f20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fdc5a4dc970 RCX: 00007fdc5a445ab7
RDX: 0000000000000020 RSI: 0000000020010100 RDI: 0000000000000004
RBP: 000000000000000d R08: 0000000000000000 R09: ffffffffffffffff
ISO 9660 Extensions: 
R10: 0000000000000800 R11: 0000000000000293 R12: 0000000000000004
R13: 0000000000000004 R14: 0000000020000218 R15: 0000000000000001
 </TASK>
RRIP_1991A
ext4 filesystem being mounted at /syzkaller-testdir121745921/syzkaller.3ZCpXv/32/file0 supports timestamps until 2038 (0x7fffffff)
loop5: detected capacity change from 0 to 2048
loop6: detected capacity change from 0 to 512
loop0: detected capacity change from 0 to 5408
ext4 filesystem being mounted at /syzkaller-testdir121745921/syzkaller.3ZCpXv/33/file0 supports timestamps until 2038 (0x7fffffff)
loop4: detected capacity change from 0 to 1298
loop3: detected capacity change from 0 to 512
loop5: detected capacity change from 0 to 2048
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 4557 Comm: syz-executor.4 Tainted: G        W          6.0.0-rc7-next-20220927 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 should_fail.cold+0x5/0xa
 copyin+0x19/0x120
 copy_page_from_iter_atomic+0x249/0x1290
 generic_perform_write+0x2cb/0x580
 __generic_file_write_iter+0x2da/0x480
 generic_file_write_iter+0xe3/0x350
 vfs_write+0x9c3/0xd90
 __x64_sys_pwrite64+0x1fb/0x260
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe48da95ab7
Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b
RSP: 002b:00007fe48b057f20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fe48db2c970 RCX: 00007fe48da95ab7
RDX: 0000000000000020 RSI: 0000000020010400 RDI: 0000000000000004
RBP: 000000000000000a R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000800 R11: 0000000000000293 R12: 0000000000000004
R13: 0000000000000004 R14: 0000000020000260 R15: 0000000000000004
 </TASK>
loop4: detected capacity change from 0 to 1298