syzbot


INFO: task hung in ntfs_read_folio (2)

Status: auto-obsoleted due to no activity on 2024/01/02 11:03
Subsystems: ntfs3
[Documentation on labels]
Reported-by: syzbot+913093197c71922e8375@syzkaller.appspotmail.com
First crash: 224d, last: 158d
Cause bisection: introduced by (bisect log) :
commit 6e5be40d32fb1907285277c02e74493ed43d77fe
Author: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Date: Fri Aug 13 14:21:30 2021 +0000

  fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile

Crash: INFO: task hung in ntfs_fill_super (log)
Repro: C syz .config
  
Fix bisection: fixed by (bisect log) :
commit bfbe5b31caa74ab97f1784fe9ade5f45e0d3de91
Author: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Date: Fri Jun 30 12:22:53 2023 +0000

  fs/ntfs3: fix deadlock in mark_as_free_ex

  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ntfs3?] INFO: task hung in ntfs_read_folio (2) 0 (3) 2023/10/28 17:05
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: task hung in ntfs_read_folio origin:lts-only C inconclusive 1 59d 59d 0/3 upstream: reported C repro on 2023/12/31 22:51
upstream INFO: task hung in ntfs_read_folio ntfs3 21 329d 434d 0/26 auto-obsoleted due to no activity on 2023/07/04 21:53
Last patch testing requests (1)
Created Duration User Patch Repo Result
2023/08/22 21:21 32m retest repro upstream report log
Fix bisection attempts (2)
Created Duration User Patch Repo Result
2023/10/28 11:59 5h04m bisect fix upstream job log (1)
2023/09/24 09:08 1h53m bisect fix upstream job log (0) log
Cause bisection attempts (2)
Created Duration User Patch Repo Result
2023/07/28 20:39 10h05m bisect upstream job log (1) log
2023/07/20 13:50 12h05m bisect upstream error job log (0)
marked invalid by nogikh@google.com

Sample crash report:
INFO: task syz-executor236:5167 blocked for more than 143 seconds.
      Not tainted 6.5.0-rc2-syzkaller-00052-gbfa3037d8280 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor236 state:D stack:24232 pid:5167  ppid:5059   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1873/0x48f0 kernel/sched/core.c:6710
 schedule+0xc3/0x180 kernel/sched/core.c:6786
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
 __mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
 ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline]
 ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:715
 filemap_read_folio+0x19d/0x7a0 mm/filemap.c:2389
 filemap_create_folio mm/filemap.c:2517 [inline]
 filemap_get_pages+0xdf7/0x20c0 mm/filemap.c:2570
 filemap_splice_read+0x4ce/0xcd0 mm/filemap.c:2925
 splice_direct_to_actor+0x2c4/0x9e0 fs/splice.c:1070
 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1195
 do_sendfile+0x623/0x1070 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f56e8e7ad09
RSP: 002b:00007f56e8e37218 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f56e8f21708 RCX: 00007f56e8e7ad09
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f56e8f21700 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 00007f56e8f2170c
R13: 00007f56e8eee4dc R14: 00007f56e8ecf0c0 R15: 0031656c69662f2e
 </TASK>
INFO: task syz-executor236:5180 blocked for more than 143 seconds.
      Not tainted 6.5.0-rc2-syzkaller-00052-gbfa3037d8280 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor236 state:D stack:25256 pid:5180  ppid:5059   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1873/0x48f0 kernel/sched/core.c:6710
 schedule+0xc3/0x180 kernel/sched/core.c:6786
 io_schedule+0x8c/0x100 kernel/sched/core.c:9028
 folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1304
 __filemap_get_folio+0x90/0xa00 mm/filemap.c:1899
 pagecache_get_page+0x2e/0x220 mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:639 [inline]
 ni_readpage_cmpr+0x313/0xa70 fs/ntfs3/frecord.c:2135
 ntfs_read_folio+0x19e/0x210 fs/ntfs3/inode.c:716
 filemap_read_folio+0x19d/0x7a0 mm/filemap.c:2389
 filemap_create_folio mm/filemap.c:2517 [inline]
 filemap_get_pages+0xdf7/0x20c0 mm/filemap.c:2570
 filemap_splice_read+0x4ce/0xcd0 mm/filemap.c:2925
 splice_direct_to_actor+0x2c4/0x9e0 fs/splice.c:1070
 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1195
 do_sendfile+0x623/0x1070 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f56e8e7ad09
RSP: 002b:00007f56e0c16218 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f56e8f21718 RCX: 00007f56e8e7ad09
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f56e8f21710 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 00007f56e8f2171c
R13: 00007f56e8eee4dc R14: 00007f56e8ecf0c0 R15: 0031656c69662f2e
 </TASK>
INFO: task syz-executor236:5350 blocked for more than 144 seconds.
      Not tainted 6.5.0-rc2-syzkaller-00052-gbfa3037d8280 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor236 state:D stack:24648 pid:5350  ppid:5058   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1873/0x48f0 kernel/sched/core.c:6710
 schedule+0xc3/0x180 kernel/sched/core.c:6786
 io_schedule+0x8c/0x100 kernel/sched/core.c:9028
 folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1304
 __filemap_get_folio+0x90/0xa00 mm/filemap.c:1899
 pagecache_get_page+0x2e/0x220 mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:639 [inline]
 ni_readpage_cmpr+0x313/0xa70 fs/ntfs3/frecord.c:2135
 ntfs_read_folio+0x19e/0x210 fs/ntfs3/inode.c:716
 filemap_read_folio+0x19d/0x7a0 mm/filemap.c:2389
 filemap_create_folio mm/filemap.c:2517 [inline]
 filemap_get_pages+0xdf7/0x20c0 mm/filemap.c:2570
 filemap_splice_read+0x4ce/0xcd0 mm/filemap.c:2925
 splice_direct_to_actor+0x2c4/0x9e0 fs/splice.c:1070
 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1195
 do_sendfile+0x623/0x1070 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f56e8e7ad09
RSP: 002b:00007f56e8e37218 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f56e8f21708 RCX: 00007f56e8e7ad09
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f56e8f21700 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 00007f56e8f2170c
R13: 00007f56e8eee4dc R14: 00007f56e8ecf0c0 R15: 0031656c69662f2e
 </TASK>
INFO: task syz-executor236:5363 blocked for more than 144 seconds.
      Not tainted 6.5.0-rc2-syzkaller-00052-gbfa3037d8280 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor236 state:D stack:25096 pid:5363  ppid:5058   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1873/0x48f0 kernel/sched/core.c:6710
 schedule+0xc3/0x180 kernel/sched/core.c:6786
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
 __mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
 ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline]
 ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:715
 filemap_read_folio+0x19d/0x7a0 mm/filemap.c:2389
 filemap_create_folio mm/filemap.c:2517 [inline]
 filemap_get_pages+0xdf7/0x20c0 mm/filemap.c:2570
 filemap_splice_read+0x4ce/0xcd0 mm/filemap.c:2925
 splice_direct_to_actor+0x2c4/0x9e0 fs/splice.c:1070
 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1195
 do_sendfile+0x623/0x1070 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f56e8e7ad09
RSP: 002b:00007f56e0c16218 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f56e8f21718 RCX: 00007f56e8e7ad09
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f56e8f21710 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 00007f56e8f2171c
R13: 00007f56e8eee4dc R14: 00007f56e8ecf0c0 R15: 0031656c69662f2e
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
 #0: ffffffff8d328af0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
 #0: ffffffff8d328eb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
 #0: ffffffff8d328920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4771:
 #0: ffff888029833098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2187
3 locks held by syz-executor236/5167:
 #0: ffff88802b5e8410 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff888074f847a0 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:826 [inline]
 #1: ffff888074f847a0 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_create_folio mm/filemap.c:2509 [inline]
 #1: ffff888074f847a0 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_get_pages+0xb1c/0x20c0 mm/filemap.c:2570
 #2: ffff888074f84360 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline]
 #2: ffff888074f84360 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:715
3 locks held by syz-executor236/5180:
 #0: ffff88802b5e8410 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff888074f847a0 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:826 [inline]
 #1: ffff888074f847a0 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_create_folio mm/filemap.c:2509 [inline]
 #1: ffff888074f847a0 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_get_pages+0xb1c/0x20c0 mm/filemap.c:2570
 #2: ffff888074f84360 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline]
 #2: ffff888074f84360 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:715
3 locks held by syz-executor236/5350:
 #0: ffff888071aac410 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff888074f5e520 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:826 [inline]
 #1: ffff888074f5e520 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_create_folio mm/filemap.c:2509 [inline]
 #1: ffff888074f5e520 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_get_pages+0xb1c/0x20c0 mm/filemap.c:2570
 #2: ffff888074f5e0e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline]
 #2: ffff888074f5e0e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:715
3 locks held by syz-executor236/5363:
 #0: ffff888071aac410 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff888074f5e520 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:826 [inline]
 #1: ffff888074f5e520 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_create_folio mm/filemap.c:2509 [inline]
 #1: ffff888074f5e520 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_get_pages+0xb1c/0x20c0 mm/filemap.c:2570
 #2: ffff888074f5e0e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline]
 #2: ffff888074f5e0e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:715
3 locks held by syz-executor236/5802:
 #0: ffff8880722ea410 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff888071d0ec80 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:826 [inline]
 #1: ffff888071d0ec80 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_create_folio mm/filemap.c:2509 [inline]
 #1: ffff888071d0ec80 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_get_pages+0xb1c/0x20c0 mm/filemap.c:2570
 #2: ffff888071d0e840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline]
 #2: ffff888071d0e840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:715
2 locks held by syz-executor236/5809:
 #0: ffff8880722ea410 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff888071d0eae0 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_trylock include/linux/fs.h:791 [inline]
 #1: ffff888071d0eae0 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: ntfs_file_write_iter+0x1cb/0x6d0 fs/ntfs3/file.c:1060
3 locks held by syz-executor236/6053:
 #0: ffff88801f8d4410 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff888071c43180 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:826 [inline]
 #1: ffff888071c43180 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_create_folio mm/filemap.c:2509 [inline]
 #1: ffff888071c43180 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_get_pages+0xb1c/0x20c0 mm/filemap.c:2570
 #2: ffff888071c42d40 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline]
 #2: ffff888071c42d40 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:715
2 locks held by syz-executor236/6056:
 #0: ffff88801f8d4410 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff888071c42fe0 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_trylock include/linux/fs.h:791 [inline]
 #1: ffff888071c42fe0 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: ntfs_file_write_iter+0x1cb/0x6d0 fs/ntfs3/file.c:1060
2 locks held by syz-executor236/7056:
 #0: ffff88802b024410 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff888074d66380 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:771 [inline]
 #1: ffff888074d66380 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: ntfs_file_write_iter+0x260/0x6d0 fs/ntfs3/file.c:1063
3 locks held by syz-executor236/7057:
 #0: ffff88802b024410 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff888074d66520 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:826 [inline]
 #1: ffff888074d66520 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_create_folio mm/filemap.c:2509 [inline]
 #1: ffff888074d66520 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_get_pages+0xb1c/0x20c0 mm/filemap.c:2570
 #2: ffff888074d660e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline]
 #2: ffff888074d660e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:715

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc2-syzkaller-00052-gbfa3037d8280 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xec2/0xf00 kernel/hung_task.c:379
 kthread+0x2b8/0x350 kernel/kthread.c:389
 ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5089 Comm: kworker/u4:3 Not tainted 6.5.0-rc2-syzkaller-00052-gbfa3037d8280 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:jump_entry_key include/linux/jump_label.h:135 [inline]
RIP: 0010:__jump_label_update+0x57/0x3a0 kernel/jump_label.c:470
Code: 03 00 00 49 be 00 00 00 00 00 fc ff df 45 31 e4 48 89 5c 24 08 4a 8d 0c 23 4e 8d 6c 23 08 4d 89 ef 49 c1 ef 03 43 80 3c 37 00 <48> 89 0c 24 74 0c 4c 89 ef e8 3b 8a 29 00 48 8b 0c 24 4a 8b 6c 23
RSP: 0018:ffffc90003e5faa8 EFLAGS: 00000246
RAX: ffffffff81bb35a2 RBX: ffffffff8cd092e0 RCX: ffffffff8cd092e0
RDX: 0000000000000000 RSI: ffffffff8cd092e0 RDI: ffffffff9200d560
RBP: ffffffff8cd0b500 R08: ffffffff81bb0afe R09: 1ffffffff2401aac
R10: dffffc0000000000 R11: fffffbfff2401aad R12: 0000000000000000
R13: ffffffff8cd092e8 R14: dffffc0000000000 R15: 1ffffffff19a125d
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f56e8e38000 CR3: 000000000d130000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 static_key_disable_cpuslocked+0xce/0x1b0 kernel/jump_label.c:235
 static_key_disable+0x1a/0x20 kernel/jump_label.c:243
 toggle_allocation_gate+0x1b8/0x250 mm/kfence/core.c:836
 process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
 kthread+0x2b8/0x350 kernel/kthread.c:389
 ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.134 msecs

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/07/20 12:39 upstream bfa3037d8280 4547cdf9 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs INFO: task hung in ntfs_read_folio
* Struck through repros no longer work on HEAD.